For your first vector, this is quite good. ^^ I can tell you worked very hard on it, Za-sama.
I have two problems with it, though... (And, I realize that this is your first vector, so I'm only trying to help you improve by pointing out things that might need a little work.) Your lines seem a little... wobbily... for lack of a better word, as if you weren't exactly sure where to put the anchor on the line to get the curve you wanted. And, your lines are also of uniform thickness, which doesn't help some of your thinner, more detaled lines from the original (For example, the hair). So, I would suggest varying the use of your line thickness, okay?
I'm not trying to offend you or discourage you from vectoring anymore... So I appologize if I unintentionally did either of those... Please keep up your hard work, Za-sama, and I look forward to your future vectors. ^^