Well, if you need any help, I'll definitely try my best.
Are the later versions of the game going to use the beta as a base of sorts? Some games completely remodel after the beta release. If you're going to continue using what you have, I'll compile a list of bugs and stuff for you to fix (oh, goodie, I know. xD)
EDIT:: First of all, on the top-left screenshot on the first page, I think the ledge would look better if it had a lip that mirrored the ledge across from it. As it is now, the ledge looks kinda cut-off.