actually, this is not very good. the pose is nice, the compo is nice, the color and feel is nice. but the intensity of the relationship between the brothers isn't really there. i think you did not catch the characters very well. most probably because you are not used to drawing naruto fanart. i was surprised that among all that i watch, you were the one who did this drawing... anyhow, it's a good true. pleasantly surprised by your doing of a naruto fanart / your reading naruto in fact..
that's good to know it would be totally different if you start drawing naruto fanart since 2003. XD i stopped following the series when naruto managed to defeat pein... got to know bits of the story here and there... but didn't want to download/search about anything to avoid spoilers.