Then, I applied a coat of bonding primer from the Plaster Paint Company (stuff I had on hand). Their primer works so well and one can even paint within an hour or so after their primer.
I bought plain black flat finish paint in a sample jar at Home Depot for only $4.99. I mixed it with Chalk-tique powder according to the recipe/instructions on the jar. Then, using a quality foam roller, I rolled on a coat. The first coat isn't usually beautiful.
If this piece hadn't been so shiny, I would have skipped using the primer and went straight to painting where I was using a dark color. However in all situations, primer or not, I leave a day between coats of paint. I also leave a minimum of three days after finishing painting to apply the first coat of varnish. When using Satin finish first, I waited a couple of days after the Satin to apply the Flat. I typically will also wait a day between Flat coats.