First time joining in Ludum Dare (I’m doing the Jam), hope to do well

I’m working solo in a project with these tools :

• Game Engine : Unity
• Graphics : Paint.Net & good old paper
• Sounds : Famitracker, Audacity, Garageband (if time allows)
• Water (remember to drink some)

What I have done right now :

No Gameplay exists as of now, I’ve been mainly working on graphics the last 3 hours. The game rules have been set on paper though. It’s going to be a platformer

I’ve been wondering, how does anyone keep track of tasks ?

Good luck everyone !