Step 1: Basic building and pinning.
Reshaping resin, Revy’s belt.
Replacing the resin buckle with bent wires.
Step 2: (really long step actually): Sanding, priming, putty, sand, prime, repeat until all surface defects, pin holes, mold lines, gaps, etc are filled and invisible under primer.
Step 3: painting bottom layers, skin is usually a bottom layer.
Fixing mistakes that happen when paint sticks to the masks.
Small details such as a filter, dry brushing, the weapons.
Step 4: The base.