I'd be happy to share the PSD file, but it is a rather large file and I don't have a good way to make it available.

I used the select tool to "carve" out streets from the large blocks. I also used it to fill in streets I wasn't happy with.

Oh, I tried adding a drop shadow for the forest on a new map I'm working on and it really works well. I'm going to update my other maps with that same effect. Thanks!