I think overall you did a great job on the pose and coloring. However, I think the folds and darker shading in Narutos jacket make it seem a bit too bulky. From other images I've seen, the jacket is a bit more fitted. Also, be careful when making lines thicker or darker. Those two fold lines near the zipper look darker, and create am impression of a deeper fold, which makes the jacket seem larger than you possibly intended.
Overall though, that's the only thing I see. I hope your friend enjoyed the piece!
