While this tutorial is specifically on how to paint a green screen using Rosco DigiComp HD Paint, I’m sure you can use your nouse and get the green screen backdrop you desire with similar techniques ;)
This video offers tips for applying Rosco’s DigiComp HD Paint to turn any wall or studio cyc into a green or blue screen.
It also showcases how the DigiComp HD formulation is able to provide smooth, even coverage in only two coats.
For more information on DigiComp HD paints, visit: https://www.rosco.com/FTVP/digicomp.cfm