I started started with a coat of Pigeon Grey and brushed it on. Classico is a very rich heavily pigmented paint and a little goes a very long way. It’s also very thick so if you find your brush is starting to drag, dip the tip of your brush in a little water and continue stroking on the paint. It drys quickly, usually less than an hour. For the next coat, I put all three colors, Pigeon Grey, Storm, and White on a paper plate and using one brush alternated between them, lightly brushing on the colors in selected spots ( video on that technique, here ). I only needed 2 coats of the Classico for full coverage.
If you want to give Classico chalk based paint from Pure & Original , go to www.pureoriginalpaint.com