Basically, having a WACOM TABLET is going to save you a lot of time in the long run. More control means less mistakes. There are not many things that you can just go buy to make you better, but this is one of them.
One of the biggest challenges after applying the new Background was making the grass line look realistic. In order to complete that task we create a new custom Brush from existing grass shapes, which is then used to define a Layer Mask.