I'm not really an "art" person.
EDIT: Er, just to make it clear: I'm trying to say that I appreciate the post, and the effort, and all that, just that it's not something I can do, really.
It doesn't take much to fill in the spaces. There's no wrong answer here.
Hell, you could paint it with fifty shades of foreskin.
But please don't.... that would be unsettling.
I think it would be fun to see what you guys do with this.
Open it up in paint or whatever and fill in the white space.
Show me what you can do.