I paint in the yard using trestles. The bright sun allows me to see the overlap to make sure I am getting good coverage
I try to lay horizontal so I get no runs
Living in a warm climate helps, so if the temps too high (>90) I wait for a cooler day so the paint drys after the overlap comes preventing dryness and blotches
Also I don't use drop-sheets, as the grass is large and dries before it hits anything.
I stand upwind, so don't bother with respirators, also if the wind is too high I don't do painting
I use a compressor to blow away the sanding dust etc too, and a lint free cloth with a bit of turps on the rag to remove dust from the pores