Interior House Painting Tips & Painting Techniques for the Perfect Paint Job

From TheFamilyHandyman.com

Mix several cans of paint in a large bucket for a consistent color throughout the room

Paint color may vary slightly from one can to the next. If you have to open a new can in the middle of a wall, the difference may be noticeable. Mixing the paints together eliminates the problem. It’s best to estimate the amount of paint you’ll need and mix it in a 5-gallon bucket (a process called “boxing”).

When coverage is difficult to estimate, add more rather than less. You can always pour the leftover back into cans. For large jobs, use the bucket and a roller screen rather than a roller tray. It’s much faster to load your roller with the screen than to use a roller pan. Simply dunk the roller into the paint bucket, then roll it along the screen until it stops dripping.

Mix paint in a large bucket Once paint is dry, you can’t just pull the tape off the trim.Paint forms a film between the wall and the tape, and
removing the tape tears pieces of dried paint off the wall..
So before pulling off the tape, cut it loose.Wait for the paint to completely dry, at least 24 hours, then use a sharp utility knife or box cutter knife to slice through the film. Start in an inconspicuous area to make sure the paint is hard enough to slice cleanly. If you cut the paint while it’s still gummy, you’ll make a mess. As you cut the paint, pull up the tape at a 45-degree angle.