[Espy]

Ok, so....

The first chibi is actually really nice; you just have to work on better lines. To me, the eyes look a bit lifeless, for some reason. And...the neck might be a bit long.

Also, I don't know if you care much about poses, but that certain pose is trite. Try different ones, even in the chibi style.

Aside from that, everything's pretty cool. Looks like you just need practice, and you'll develop your style. I'd suggest you color some if you're comfortable.