gokuh bust

This is a pretty cool fanart. ^_^ I like your stylized version of Goku and the mountains and clouds in the background. It's very appropriate for the artwork.

The banners are correct, although your "bo" for "booru" ( ボール ) looks a little weird/obscured. ^^ From my view it looks like a roku ( 六 ) with ten tens.

As for any "advanced critique" I don't have much because I quite like this, but I would just suggest cleaning up the lines a little bit for presentation. ^^