Cleaning, repairing, and preparing surfaces for plastering, including removing old plaster, patching holes, and ensuring a level base. Mixing plaster, cement, and related materials to the required consistency. Applying coats of plaster or stucco to walls and ceilings using trowels, brushes, or spraying equipment. Patching and repairing cracked or damaged plaster surfaces. Following safety guidelines while working on, for example, scaffolding and ladders.