Do I need to do anything differently after installing ThistlePro FastSet Finish?

Can I sand ThistlePro FastSet Finish?

Like other finish plasters, it should not be sanded.

How should I dispose of waste plaster after using ThistlePro FastSet Finish?

Segregate the plaster from non-gypsum waste for recycling where possible and dispose of it according to local authority requirements. Waste and scrap must not be poured down drains otherwise it will block them it is also not environmently friendly.