Edit: OMFG. Overnight, this has suddenly become overrated. Haha just kidding... but... um... it's going to be impossible at this time for me to thank everyone who bombed my inbox with s and es and comments and such. So I'm sorry but all I can manage right now is a collective thank you. I mean every letter of it.
Truth be told, even if I said I was "just having fun" I was thinking of including the faces in the manual I'm co-authoring at the art school where I work. So yes, use them for reference and practice, that's what they're for!
I'd also like to thank everyone for their suggestions on what faces to do next but I don't think I want to risk another message center explosion... well that, and/or being accused of attention whoring... so how about you people draw your own?