Well, one would be the use of those paths within the sand. The tiled path doesn't work, and that other path is hardly noticable, and seeing as it looks identical to the paths in cities (just a different pallette), I dunno what to think.
I like them all, if I'm honest. Only thing I can pcik up on is the edges of the mountain where it meets the grass in the second pic, looks too straight to me.
oh right yea i have done few adjustments so it looks unsqaure but they dont flow together so i have some work t do :/
haha atleast im trying ya know :P
(this hack im ganna try my best in everything :P)