i dont agree with the guy bellow

I'm almost positive they were meant to look like that. The only reason they look like rocks is because they're ripped, and the white background might make them seem too sharp in contrast.

Good but..

the shapes should be more realistic. They are too sharp, more like rocks or golems, they should have noise on their skin(something like scale) but they should have the curve skin shapes too, not rectangular shapes only.