If you’re climbing the walls waiting for the start of the comp, consider drafting your game’s “post mortem”. It’s a ghastly term but just means talking about the development of your game. This can be good to get done early, so the project is still fresh in your mind (and you can write it without reference to any reviews or feedback).
You can talk about your experience making the game, especially if it’s your first time making one, or using a new system. You can explain a tricky puzzle or effect to get right. You can talk about your influences or process. What worked, what didn’t. What was left on the cutting room floor. Keep it positive and people can learn from it.
I believe the standard etiquette is to post them after the voting period so everyone can see it and not have it influence their reviewing/voting.
I wrote a long one for my first time in IF Comp after a very long hiatus and it was a nice way to draw a line under a huge effort.