I regret not having participated in the previous years, so this time I'm in!
My order is: Do whatever you want.

However, if you're anything like me, you don't know what you want. So here are some really unimportant and random things you can use as guidelines.
I like:
- Nature. (Including but not limited to the entire Universe.)
- Organisms. (Any, really. From fennecs to
Dictyostelium discoideums to potatoes. Dragons also count. Humans are usually pretty boring, though.)
- Dystopias.
- Smoooth animations. (Who doesn't?)
- Experimenting with concepts, styles, etc.
- Things that make you think and/or want to kill yourself. (Like philosophy in general.)
- Being surprised.
- Knowing you enjoyed doing it

I don't like/care about:
- Artificial landscapes.
- Fanaticism in general. (Religion, money, cars, sports, women, etc.)
- "Nerd culture", animes, memes, movies, games....
- Most of the things common sense dictates as disgusting or repulsive. (Except spiders et al. They're super cool.)
- Some pixel art styles: isometric, "modern", extremely old. (All of them with some exceptions.)
- Christmas. (Is that too hypocritical?)
Again, these are pretty unimportant and random, so don't stick yourself too much to them if you don't feel like it. Just challenge yourself and have fun!