You can keep your brush or roller wet between coats by covering it tightly in plastic wrap or using a plastic bag. And don’t forget to put the lid back on the paint can right away.
I use a fresh roller for each paint job, but you can clean them with water and a 5-in-1 tool.
Remove painter’s tape as soon as the paint is dry.
If you taped off your room’s edges with painter’s tape and the paint is peeling as you remove it, score the edge
lightly with a razor for a clean line.
If you notice a paint drip while it’s still wet, you can wipe it away with a damp cloth. If it has already dried, you will have to take more drastic measures.
Stop to clean your brush if you’ve been painting for more than an hour or so. Otherwise, the paint will start to dry towards the top, gumming up your paint job and ruining your brush.
Clean your brush with a little dish soap (assuming you’re using latex paint) and a brush comb until the water runs completely clear. A quality brush can hold a lot of paint, so give the bristles a little squeeze to wring out the excess water when you’re done and make sure there is no more paint in the brush. Smooth the brush into shape and then let it sit to dry completely.