Her neck is too far back. I did some redline of where her spine and neck should be.
Also, the mouth should be between the eyes.
Anatomy issues apart, I like the outfit idea, and colors. I recognized it as Roll even thou she has a diff "age". I'm not a fan of the "popeye" arms but I guess you call it a homage to Megaman style.
I rated everything 2.5 stars because I don't like the star system and writing this made reach the 100 words minimum.
Wait, need a iittle more....
blah blah blah.
........Ok, now I'm done.