Again alot can be done here however to me its a really good piece and it inspires me to do more of her.
It's very good, but I see two real problems that are very common with beginning drawers. 1. You're drawing what your mind sees instead of what is actually there. Don't draw based on your preconceptions. Instead, look at what you're drawing as just a series of lines and then draw each of those lines. 2. You drew her facial features too big. For some reason this is very common with beginners. You should work on making them more proportional to the size of her head. (I mean, are those eyes huge or what? Is she an anime girl? ) Anyway, it's a great start and I think with some practice you can improve easily.
You should definitely almost "trace" another picture. By "trace" I mean follow the exact lines of a similar picture you have, but don't actually place a piece of paper over the picture and go from there... I'm talkin' about something different. If you're drawing a particular girl, NEVER draw whatever comes up in your mind... Unless you're a very good artist... Otherwise, I'd like to say it looks good, but I have no idea what Amber actually looks like... (Man, those eyes are gigantic )
It's called the grid method. It's where you place a 1"x1" grid across the original picture, then on another peice of paper make a larger grid, such as 2"x2" or 3"x3". Then you just copy what you see in the small squares into the larger squares. It's fairly simple, but really only helps if you're wanting to make a larger image. This looks like it was just done on a piece of printer paper, so that wouldn't really help you.