I dunno, I just wanted some weird background I guess. xD At least the portrait is okay? :P
Nice portrait! The dithering on background is quite... odd
Well drawn portait. The good character position as well as the expression adds a lot to it. I don't know if you need that bright highlight on the green shirt. It makes the shirt look shiny, but that depends on what the material the shirt is made of.
Portrait is totally OK!