Paint is one of the most popular decorative finishes for walls and ceilings. What's really fun about painting is taking color and turning it into something more elaborate. Faux finishes offer many decorating choices to create beautiful and distinctive looks.There are two categories when it comes to faux finishing: broken color and imitation. Broken color is simply combining colors to get what you want, while imitation means trying to mimic the look of something, like stone, marble or wood, on your walls.
Prep Work
In older homes, to remove dirt, grime and grease from the walls simply use a bleach solution (bleach and a lot of water) and a sponge to wipe down the walls. Once the walls have dried, you are ready to add primer. Be sure to remove switchplate and outlet covers, move furniture out of the way and tape off windows, doors, baseboards and window trim. Put down dropcloths, especially if you have carpet.
Venetian Technique
You'll be using joint compound for this technique. Joint compound is thick. If you find it is too thick, just add a small amount of water to the compound as you go to get a thinner product. This will allow for a thin coat, which is key to the technique. You will also need drywall mud knives and a drywall mud tray.