Green Ponytail bust

First of all, before I have written this critique I have swarmed through your gallery to analyze your style.

Second of all , You are a good artist (even more superior than me). But listen here,
there are things that you need to improve that I , myself is struggling.
You have to study a little bit about anatomy. (how does muscle look like in that region and etc) because your collar bone placement is a tad too offset. It has to be perfectly straight to the edge of the shoulder. The shading is a little bit rushed (I presume) You should've taken your time in shading since it's the component that will make it the best <img src="e.deviantart.net/emoticons/s/s…" width="15" height="15" alt="" data-embed-type="emoticon" data-embed-id="391" title=" (Smile)"/>. As for FACIAL FEATURES. It is alright , but your hair shouldn't have an outline black. It's kinda off into your realistic drawing style. It should be less visible , I'm sure you get the idea <img src="e.deviantart.net/emoticons/w/w…" width="15" height="15" alt="" data-embed-type="emoticon" data-embed-id="387" title=" (Wink)"/>. And now for the hair.
Coloring looks great. I gotta ask : Are you using just with mouse to color the hair?.)

Your lighting stroke on hair is kinda redundant which makes it look a little offset to the drawing style of your face.

Lighting and shadowing borders in this style is not quiet visible. It is transisted unobviously. (Kinda like a gradient in photoshop).

BUT what makes the hair look sooo good is the actual hair strokes. It looks so realistic. If the lightings are more fixed and the hair drawing borders aren't black IT should look sooooooooo sync with the face.

Well in overall you're going to need to improve your anatomy (just like I do)
and your shading. Just remember that Quality is more appreciated than quantity. So take your time coloring. It's only the first time which will take you a half of your day to color, after preceding tries it will lowers up to a minimum of 1 hour. for whole body. So just keep practicing.

Don't be disappointed , I actually like the art <img src="e.deviantart.net/emoticons/s/s…" width="15" height="15" alt="" data-embed-type="emoticon" data-embed-id="391" title=" (Smile)"/>.