DIY quality paint job
dust is a big issue and so is air flow if you don't have air movement the paint will smother itself and forget the single stage go base coat clear coat the base (the color) will go on like laquer and flash quickly this way between coats you can tac off the dust before the next coat two to three coats of base a final tac on the last coat, and then three coats of clear.then wet sand the clear after twelve hours and buff. no color on the buffing pad no burn marks in the paint. durable in yhe sun light. and clear coat is definetly a must over metallic
wetting down the floor is a good idea. so is plastic just keep in mind the over spray collected on the plastic is not permanent if the plastic is disturbed that overspray dust will fall into the paint. and you have to be clean also. shower and clean clothes before you paint. most dirt in paint jobs come off of painter