Vacuum the piece of furniture you are planning to paint. You can even take a lint roller to the stubborn spots (like dog hair).
I trimmed any strings that were coming off the fabric, and I fastened on any loose spots with a stapler.
Protect any woodwork you do not want to paint with painters tape. Mix the chalk paint with some water and test it on a spot you will not be able to see, like the back of a chair or sofa. Once the desired color and thickness has been achieved, start painting the upholstery.
Spray the fabric down with a spray bottle in small sections. Saturate the fabric pretty thoroughly. Using a paint brush, paint on the chalk paint, rubbing it in well and getting in any crevices and around buttons. I pulled some of the fabric up where there were pleats to get underneath.
Spray the freshly painted spot with a little more water, then brush. Continue spraying the fabric in sections and painting until the furniture is completely painted. Allow the fabric to dry completely, at least 12-24 hours (or longer) between coats.
Apply as many coats as needed for color saturation and covering up any designs that may have been present. Once the final coat is dry, apply a clear wax.