Education: Secondary (high) school graduation certificate. or equivalent experience. Tasks: Read blueprints, drawings and specifications to determine work requirements . Supervise other workers. Apply, level and smooth coats of plaster. Clean and prepare surfaces. Cure freshly plastered surfaces. Measure, cut, fit and install drywall sheets. Mix plaster ingredients to desired consistency. Position and secure sheets to metal or wooden studs or joists. Experience: 1 year to less than 2 years.