Her neck is too far back. I did some redline of where her spine and neck should be.
dl.dropboxusercontent.com/u/15…
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. <img src="e.deviantart.net/emoticons/s/s…" width="15" height="15" alt="" data-embed-type="emoticon" data-embed-id="391" title=" (Smile)"/>
Given the size of the eyes, they are too close. A good rule of thumb is to be able to fit a 3rd imaginary eye between the other 2 eyes.
The nose is also off, if you are going to just hint it like you did, you should put it on the center.
Shoulders are also uneven, with the one right being higher than the one in the left.
I have nothing else to say, but the critique needs to be 100 words long. Lorem Ipsum, etc and all, have a nice day. <img src="e.deviantart.net/emoticons/s/s…" width="15" height="15" alt="" data-embed-type="emoticon" data-embed-id="391" title=" (Smile)"/>
I am glad you stuck around