Yeah, there are still a few niggles with this piece. If I make the ground tile background darker to mesh more with the rocks, then it will be less functional as a backdrop when sprites are in front of it. This piece is a tricky challenge, because I'm approaching it as something built out of game assets that function beyond this one mockup.
After the critique process, I'm satisfied with the result of this iteration. I may make some minor changes to it, but I'm going to call it done. I'll post the new PixelJoint link here when I upload it to my gallery. Thanks for the help, guys!