I finally managed to enter a round at somein30 rather than telling myself I was definitely going to enter and then completely failing! Exciting times.
For the Extra round, I decided to go back and enter Heroes Vs Villains. I did Normal mode, with the heroes being the first lot of 10 icons and the villains being the second lot of 10. I decided to limit myself to making Final Fantasy XIV icons because apparently I have a vendetta against myself and wanted to force myself to work with difficult caps lol.