Hey eunivrz, These are really cool designs, nice work. My critique isn't much, just a few small things that I think will help your drawing a little. In the first one, she looks out of balance, because her center of balance is way past her feet. Also, given how long and thin she is, her legs feel kind of short. In the second one, I would just use the vines wrapping around the limbs as cross contour to help show perspective. Right now, the upper right arm looks like its going down and away from us, but the forearm looks like it's coming toward us. It's working against your perspective. I did a couple of sketches to show you what I mean, hope it helps :)