Pretty good for your first.
I might seem a little harsh, but I am helping you. I know, I'm an artist (I've been drawing a long time, and I still need improvement)
Some parts are a little out of proportion; the size of the shoulder relative to the head. The body is rather short. The legs, hands and arms are rather large.
May I ask, are you unable to draw hands properly or are not pleased with them? That may be why the hands are too large. Sometimes people will draw hands and feet either too small, too large or they may hide so they wouldn't have to draw them (e.g hands in pockets). This is because they are unable to draw the parts in question correctly or what have you.
Overall, very neat sketch; alot better then most 'firsts' I've seen. It's nice. If you like drawing, I advise you to continue, you WILL improve. And keep ALL of your drawings, it is really helpful.
~ .:Jess:.