[Zman]

I've actually seen much worse art posted on this forum, so I'm going to give some kudos for actually posting a full color picture that isn't horrible to look at. Drawing the human body is very difficult to draw accurately and you would do well to purchase book on art instruction. It could be a book on how to draw Manga or a book on drawing the human anatomy, it really doesn't matter. But you need to practice drawing, to get better and these art instruction books will help you improve your drawing skills.