I'm about to paint a mural on a school playground wall. the wall is brick and has already been primed. I drew a sketch on paper and am considering the grids technique. I need to know how to outline the grids and the drawing itself...do I use chalk? charcoal? pencil? how do I rub off mistakes?? then, what paint should I use? should I buy all colors or mix- will I be able to make them again if I manually mix them?
where do I start?
where to buy brushes and what kind? where to buy paint??
Thank you for any help!!!