If you do not have much experience as a painter, use masking tape is best way to perfect cutting edge painting. If you feel comfortable with confident brush, you can get job done freehand. Check this out!
How to cutting edge painting? Cut edges with a brush. Start at top of wall and cut on edge between ceiling and wall. cut line should be 2 inches. This makes it easy to paint wall with a roller without hitting roller on ceiling. Cut in corner of wall as well. Prevent paint on adjacent wall. idea is to keep a wet edge only in wall is working. Finally, cut on long edge of base edge and bottom plate of wall.
Place a paint roller extension pole. Paint wall with an extension pole is much faster, which makes it easier to paint a wet edge before it has time to dry. Paint wall with paint roller working in same direction as used to cutting-in. If you cut in from left to right of wall, begin rolling on left side, which has had more time to dry than right.
Saturate paint roller in a paint tray. Working from roof to ground with roller. Roll up and down several times, covering 3 – to 4-foot wide area. In addition to maintaining wet edge of cut line it is also important to maintain wet edge with line roller. Overlap wet edge of first section, when you roll second section of wall. Continue cutting edge painting process until wall is completely painted.