To be honest, these sort of "styles" are the most common seen styles of "GFX". There's nothing here to suggest you've even created them; I swear I see the same stuff in just about every portfolio.. I can't force you to give up "GFX" style work, but I do suggest it because it doesn't even exist outside a YouTube circle.. If you do continue it, I suggest creating your own shoe that sets you apart. When someone looks at it they should know its yours. Originality is what gets you noticed. I'm sure one of your goals is to get on to one of those top "GFX" teams. If that's what you want or even fame around YouTube you need to do something that everyone isn't.

I like the "White Backgrounds" the most nice job overall.