I burst out laughing when I saw this! Dont get me wrong, I love the art...I just forgot how random the whole "scretchy neck" thing was XD

where as I can agree with the b/w spaces, i do believe it shows the what the curse looks like on Sasuke. so personaly, I like it. And woot...Ochimaru looks scary!! ;'D Nice line art!!

You have an interesting style, I definitely like the contrast between black and white, I think it would look even coolor if you filled those white spaces in ^_^.