I don't want to be rude but since it's a finished map I'll just throw in my two cents. for me it doesn't work that much. The fooliage looks blurry and I agree with jack about the pixellated edges of the greenery. The blending between all the elements used isn't really good (there's even some edges on layers you used that are still visible and don't match the other layers). The roots shape is interesting but the bevel and emboss used on them make them looks too digital and unrealistic.