I was gonna say something similar to
big job yesterday but then I assumed you'd done this before.
Keep everything in order and organized, oriented the way it came out of the engine, for balance sake.
If you have enough room in your garage/shop put down a piece of cardboard on a bench and label everything. You can even punch screws/bolts through so they don't move if it gets bumped.
Label your crank caps.
Label/number your pistons and keep their caps attached with the same bolts. Put an arrow on top of them to know which way the front of the engine is.
Baggie and sharpie label everything else.