pes man se nota bastante que es un fondo clonado del anime, tal vez unos colores en naruto mas acordes al fondo lo harían ver menos como si fuese un póster o pintura bajo naruto :P
Your coloring isn't the problem it's great but the background doesn't blend in well with ur color. I don't know what he's suppose to be sleeping on? Is it a tree or the ground? Because his shadow is just too straight forward.