I dunno, I just wanted to try something closer to the original show. When I sketched that I was almost trying to copy the style of . As for the chest, it's just "gone: because she's sticking her head out.
Aw, don't give me that sweating emote; now I feel bad. You did a great job if you were following the show's style. Not enough artists draw her moving where her hair is blown back, and I think some people forget that the mane grows from her neck too xD
That... that PAINT. Oh my god. HOW DID YOU DO THIS. What program/brush/settings, if you care to share? /me studies picture more Oh. Oh my. Very well done. Wow. The more I look at it, the more I realize how epic it is.