Use a big piece of cardboard. Screw screws into it in the same order they came out, and draw an outline of the part they came out of. Tape down small pieces tha

Use a big piece of cardboard. Screw screws into it in the same order they came out, and draw an outline of the part they came out of. Tape down small pieces that aren't screws. Label everything with Sharpie. It slows you down enough to prevent a lot of mistakes.