well, I think the sprite is about a 3/10, but since it is your first time, I will give you a 8/10. I think it is pretty good for a first try, but I will show you four large(r) problems.
1. Hair highlights should go down the locks of hair, instead of in a line across, but down the hair randomly, not as if you were colouring something whole.
2. Outlines are far too dark. Never use dark outlines, unless you are doing a cartoon style drawing, but dont alternate between realistic outlines and black ones. Make it a very dark shade of what you are drawing, like the red shirt would have a crimson outline.
3. The pants are too straight, and the shading makes it look like a cylinder. Real clothing has folds, and you need to show this in the shading. I will try and show you how later, it is still a little tough for me.
4. Lightsource. On the pants, the lightest shade is on the left, but on the shoes, the highlight is on the right? So is the lightsource coming from the right or the left? Make this more clearly defined in your next peice.
Good job, I might edit it to try and fix your mistakes later. Always good to see a new spriter.