>>1816690Different anon. I went ahead and did some of the hair and face to highlight some issues.
For the hair, much of the tips lack proper curvature. You need to use the handles at the tips of the hair more, so that you can curve the hair and give those tips direction, especially at the large loops. You also forgot to cut out some of the hair that shouldn't be there, such as at the top right, and a couple at the bottom left.
Much like the other anon said, many of your areas are not properly aligned. For instance, compare the neck shadow and the hair to the right of it to that of mine. You will notice that I properly layered and aligned the nodes so that all areas of the shadow, skin and hair overlap properly. If you're doing this in Illustrator you can take advantage of Smart Guides and the Shape Builder tool to make it much easier to do so.
As for coloring, here are some tips for the skin, especially when dealing with the poor selection from the original image. I tend to work through the HSB (Hue, Saturation, and Brightness) scale, so I will refer to it as such for all the numbers. Generally, you want Hue to be between 25-35, Saturation between 15-24, and Brightness between 95-100. Between all of those ranges, you will mostly be fiddling with the Saturation. Less Saturation means more pale skin, and more Saturation means richer skin, so depending on the character, you can be anywhere between that 15-24 range (Brightness will also effect it, but minor changes make large differences).
