Retail Fashion Ad Retouching – Part 1

Fashion Ad Retouching, Part 1: Building the Composite

This two-part series recreates a retail fashion ad campaign from scratch, using the same model photographed several times on a gray seamless backdrop. Part one covers everything that happens before any real retouching starts: cutting each version of the subject out, arranging them into a single composition, and blending the different backdrop pieces together into one seamless scene. You can see how the shoot itself came together in the behind the scenes post.

Bringing All the Source Images Together

With several separate photos of the same model to combine, the first step is getting them all into one working file.

1. Load Files Into a Stack

   Go to File > Scripts > Load Files into Stack, click Browse, and choose the images to bring together, then click OK to load them all as separate layers in one document.

Cutting Out the Subject on Each Layer

Because the subject was photographed on a plain gray seamless backdrop, a simple selection tool is enough to cut her out cleanly on every layer.

2. Select the Background, Not the Subject

   Press W for the Magic Wand tool and click on the background just outside the subject, rather than trying to click on the subject herself.

3. Refine the Selection

   Hold Shift and click with the Magic Wand a few more times, or hold Shift and use the Lasso tool, to add any remaining background area to the selection until the subject is well isolated.

4. Add an Inverted Layer Mask

   Hold Alt/Option and click the Add Layer Mask button, which adds a mask that’s already inverted so the subject is visible and the background is hidden.

5. Repeat for Each Remaining Layer

   Select the Magic Wand tool again, click the background on the next layer, refine the selection, and Alt/Option-click to add another inverted mask, repeating this for every layer in the stack.

Why Selecting the Background Is Easier Than Selecting the Subject

Clicking directly on a person with the Magic Wand rarely selects them cleanly in one click, since skin, clothing, and hair all have different tones. A plain gray seamless backdrop, on the other hand, is close to one flat color, so selecting it and then relying on the layer mask to flip the result is a far more reliable way to isolate the subject.

Why Alt/Option-Clicking Adds an Already-Inverted Mask

Adding a normal layer mask from an active selection hides the selected area and reveals everything else, which is the opposite of what’s needed when the selection is the background rather than the subject. Holding Alt/Option while adding the mask flips that relationship immediately, so the subject shows and the selected background disappears in a single step instead of requiring a separate invert afterward.

Arranging Multiple Instances of the Same Subject

With every layer cut out, the next step is deciding how the repeated instances of the same model will interact with each other in the frame.

6. Reorder Layers to Control Who’s in Front

   Drag layers up or down in the layers panel, or hold Cmd/Ctrl and click to select multiple layers at once, to control which instance of the subject appears in front of another.

7. Reposition and Resize Each Instance

   Drag each layer into place and press Cmd/Ctrl+T to transform it, scaling individual instances slightly larger or smaller to build a sense of progression across the frame.

8. Focus on Spacing Before the Backdrop

   Concentrate on how the different instances relate to one another and their spacing, without worrying yet about how the backdrop looks underneath them.

Why Compositing Comes Before Retouching

Getting the overall arrangement roughly right first establishes the base image everything else builds on top of. Doing detailed retouching work before the composite itself is settled risks redoing that retouching later if a layer needs to move, resize, or change position in the stack.

Blending Several Backdrop Pieces Into One Seamless Scene

Since no single piece of seamless backdrop was large enough to cover the whole composition, multiple backdrop layers are blended together by hand.

9. Turn Off Unneeded Layer Masks

   On the bottommost layer, turn off its layer mask since that backdrop will now be visible everywhere as the base.

10. Paint White at Low Opacity to Blend Backdrops

    Select a backdrop layer’s mask, choose a soft brush at around 50% opacity, and paint white to bring more of that backdrop through in specific areas, working away from any subject that shouldn’t be covered.

11. Reuse Whichever Backdrop Piece Fits Best

    If one backdrop layer doesn’t give a usable transition, switch to painting white on a different backdrop layer’s mask instead, so the whole scene reads as one continuous piece of seamless.

Cropping to Lock In the Composition

Once the arrangement and backdrop blending are roughly in place, cropping helps confirm the composition is working.

12. Crop With the Crop Tool

    Press C for the Crop tool and adjust the crop to frame the composition well, spending real time here since composition matters a great deal for this kind of image.

13. Leave Delete Cropped Pixels Unchecked

    Uncheck Delete Cropped Pixels in the options bar before committing the crop, so any cropped-out area can still be recovered later if the composition needs to change.

Blending Backdrop Tones With Clipped Curves Layers

Even after painting the masks together, the different backdrop pieces can still show a visible seam between lighter and darker areas.

14. Add a Clipped Curves Layer

    Add a Curves adjustment layer, then press Option/Alt+Cmd/Ctrl+G to clip it so it only affects the backdrop layer directly below it.

15. Darken or Lighten to Match the Seam

    Click the middle of the curve and drag it down to darken a lighter backdrop piece, or drag it up to lighten a darker one, until the transition between pieces reads as one even fade.

16. Adjust Strength as Needed

    Click the up or down arrow keys to fine-tune how dark or light the adjustment is until the fade looks even across the seam.

Why Clipping the Curves Layer Keeps the Fix Localized

An unclipped Curves adjustment would darken or lighten everything above it in the layer stack, including the subject standing on that backdrop. Clipping the adjustment to just the backdrop layer beneath it means the fix only affects the seam that actually needs it, leaving every other layer untouched.

Protecting the Subject From the Backdrop Adjustment

A Curves layer meant only for the backdrop can still darken the subject standing in front of it if it isn’t masked correctly.

17. Paint Black Over the Subject on the Curves Mask

    On the Curves adjustment layer’s own mask, paint black directly over any part of the subject that’s being affected, so the darkening or lightening only touches the backdrop.

18. Reload the Original Selection If Needed

    Shift-click the subject’s layer mask to turn it off, select the backdrop again with the Magic Wand (W), invert the selection, then use it on the Curves layer’s mask to precisely exclude the subject from the adjustment.

Grouping the Finished Composite

With the composite and backdrop blending in place, grouping everything keeps the file organized heading into part two.

19. Select All Related Layers

    Shift-click to select every layer that makes up this composite.

20. Group and Name the Layers

    Press Cmd/Ctrl+G to group the selected layers, then double-click the group’s name to rename it something descriptive.

Why This Approach Works

Selecting the background instead of the subject, then flipping the result with an Alt/Option-clicked mask, turns an otherwise fiddly selection into a one-click, repeatable step across every layer in the stack. Doing the compositing and backdrop blending before any retouching establishes a solid base image first, which is exactly why the tutorial keeps circling back to spacing, layer order, and backdrop seams rather than jumping into finer detail work. Clipping every Curves adjustment to just the layer it’s meant to affect, and masking the subject out of any adjustment meant only for the backdrop, is what keeps a multi-layer composite like this one from turning into a tangle of adjustments doing unintended things to each other.

Final Thoughts

None of the individual steps here are complicated on their own — a magic wand selection, an inverted mask, and a couple of clipped Curves layers — but combining them carefully is what makes a multi-image composite like this one hold together convincingly. Part two of this series picks up from here to refine the selections further, work on color, and drop in the ad’s logo to finish the piece.

Quick Reference: Keys, Menus and Settings

• Load the photosFile > Scripts > Load Files into Stack
• Select the backdropW for the Magic Wand, Shift-click to add; Shift with the Lasso for leftovers
• Mask the modelAlt/Option-click Add Layer Mask, or Cmd/Ctrl + I to invert
• Arrange the posesReorder layers; Cmd/Ctrl + T to resize
• Blend backdropsBrush at about 50% opacity, white on the layer masks
• CropC, uncheck Delete Cropped Pixels
• Even out a seamCurves, Alt/Option + Cmd/Ctrl + G to clip, middle point down or up, arrow keys to fine-tune