Are like, pop-culture monsters and/or cryptids cool here, or does it strictly have to be an OC?
Sorry for the delay! Been quite sick lately. -__-
Cryptids are perfectly OK! Like dragons, I consider them to be a "mythical archetype", where any interpretation of them (excluding licensed characters, of course, Spyro the dragon being one example) is going to be unique/original to the artist.
As far as pop culture monsters go, could you give me an example of what you're referring to? I want to make sure I give you an accurate answer.
Yeah, no worries, thanks for replying, I appreciate it! By pop-culture monsters I mean stuff like The Wolfman, Nosferatu, Frankenstein's Monster, ect. Characters like those.
Classic monsters should also be fine to use as archetypes, so long as it's not a direct copy of an established or licensed look. For example; creating your own unique version of Frankenstein's monster (which is essentially sort of a flesh golem) would be acceptable, but fanart of Boris Karloff's version would not get approved.
Man this looks neat, are slightly sexy monster girls alright?
or do they have to be more serious and subtle?
Slighty sexy anything unhuman is perfectly fine! 
Anything bordering on pornographic or fetishistic will be declined, however, just to clarify.
Oh okay then, I think I can figure that out
