Starting a new one tomorrow…. It’s huge. Tips?

I can’t remember the exact size. But for a bit of reference it’s like half the size of my bedroom wall lmao it’s gigantic. I’ve had it for a few years just haven’t gotten to it. Any tips for one THAT big? It’s going to take months more than likely but I’m prepared. Do I seal as I go? Do I section differently or do color by color? AHHHH IM STRESSED ALREADY. 😅😅