Edited Sonic 2 Sprite(s)

[The_Doom-ed_one]

I'm actually not new to sprites at all. I love making customized (and I know the difference between custom and edited) sprites, so don't be afraid to critique me.

Now, I just finished a rip of Super Sonic from Sonic 2, and I decided to perform an edit on one of the sprites but upon reading some rules I became confused.

Would this: http://i56.tinypic.com/neyt7p.png be allowed inside the credit tag for my sheet, which is a rip?

Once that question is answered, I will be happy to discuss more about the edited sprites and the possibility of an entire sheet, if you guys think it has potential.