Hello lovely potential writer or artist! I apologise for referring mostly to fic below, but you have an even freer hand with art as I love just about everything.
I'm really easy to please, I promise. I like my pairings as rare as possible, so feel free to bring in anyone you want except Fenrir. If there's something you've been dying to write but thought you might be the only one who'd enjoy it, this fest is the perfect time to bring it out, and I'm sure I'll love it. I'm fine with anything from ultra vanilla to as kinky as it gets. I like everything from sweet (just not pure fluff) to dark and angsty, am quite happy with fic anywhere on the range of consent, so whatever works for the characters you choose will be fine.
Completely optional as with everything, so no need to read this if you already have an idea, but if you absolutely must have something to work with: I always enjoy characters smoking/drinking/experimenting with mind altering substances, infidelity, secrets, spies, good characters doing bad things (for the greater good or not). I like amnesia, 'made them do it', unreliable narrators, and though I'm good with bad things happening, I prefer to see the aftermath of events (torture, deaths etc) on characters rather than the events themselves as a general rule. I like reading about characters that are a bit broken, but I like to see the cracks rather than the open wounds, if that makes sense, and although I generally mean that psychologically, I'm interested in seeing characters cope with physical injury/illness/disability as well, canon or not. I like seeing older characters portrayed realistically too, with any physical or other restrictions they have. If any of these problems are overcome with magical help that's fine, I'd love to know more!
I like dialogue in fics. Nothing pleases me more than good, in-character dialogue. But if that's not your strong point or your style don't fret about it, I promise this is just in case you need some preferences! Ummm, I also love interesting structure in fics, from the 'five things' type to flashbacks, anything really. If all of the above has you tearing your hair out, I swear that you can't lose by picking any two characters and dropping them into a dangerous/tricky/funny/smutty situation to see what happens.
Most of all I'd like you to have fun writing/drawing it, so throw anything of the above out that would make it less fun for you and just go for it. I'm sure I'll enjoy it :)