I feel like critting your sprites.
Well, there are a few things for you to improve on for this sprite. The first thing that caught my eye was the hair. You didn't really give hm bangs, and the hair looks more like mountains than hair. Second, your shading colors and areas, mostly on the shirt and hair. I don't have much to say about the pants because they are just recolored. Well, the shirt looks like you made it light~peachish orange but shaded it red. The shading areas on the hair and shirt just look awkward... They should be more.. "curvy" than diagnal lines. the hair looks more blocky than flowy... like he used too much hair gel.
The first thing that stands out in this sprite is the head. It is too flat, and is too "straight line" on the left side of the head. And Again, there aren't any bangs... the hair just looks pasted on her head. The next thing I notice is her pants. They look too bunched up at her shoes, but they should go inside more. Also, the legs aren't shaded where they meet the skirt. The stomach bulges out randomly in the middle. You shouldn't use one pixel to make a line go forward two pixels, like the pixel in the middle joining the two lines should be a line of pixel going vertically and then move into the other line... I can't explain it well. Also, the skirt shading is odd and the arms attaching to the body look awkward.
I hope this crit will help you in the spriting world