Thanks for the suggestions guys!
Ravells: I'm going to probably be recoloring the entire map once I get the basic structure together. I'm colorblind, so I'm leaving color until the absolute last thing so that I can do that all under the guidance of you experienced non-colorblind mappers.
Would you mind sending me the hex code, HSV, or RGB values for the "fawn" color you mentioned
Oh, and those mountains were all made by Ramah, and then converted into brushes by Vhailor27. I want to make sure those two get all of the credit for them... I'm not nearly that talented.
Landorll: You and I are thinking along the same lines for those hills. I might make them a bit more sparse, but in very similar places.
I'll also probably play with some foothills near the mountains on both sides.
Oh hey Ramah, thanks for the layering suggestion on the mountains. I ended up using that and it was super easy for me. I don't know why I didn't think of it beofre . I just made a couple layers and made all the mountains different wacky colors so I knew which ones were on which layer. Then, the erasing was a breeze.