Oh I like Free! too. Havent finished it yet tho XD These guys look good on your style, haru especially. His expression is perfect. Their shoulders and collar bones look awesome. I also like how heir arms are touching, cute
I think, you can do it if you try! Maybe you should just make the darkest shading in the area of elbow and make it lighter and lighter where it goes out... Well, it's true that this is a very complex arms' position.
you got far enough to consider this pretty done. the eyes have a lot of weight to them so help become good focal points, and the hair has great highlights to it. bending of the arms looks like it was really hard to draw too