<human>:  What are the best methods for painting a wall?
<bot>: 
1. First, make sure you have the right tools, such as a roller, brushes, paint tray, and tarp.
2. Next, prepare the wall surface by cleaning it, sanding if needed, and priming the wall.
3. After prepping the wall, apply two to three thin coats of paint and make sure the paint is completely dry between each coat.
4. Finally, let the paint dry thoroughly before applying a finishing coat of sealer.