This is a really nice poster for the Italian sex comedy La matriarca. We watched it on Daily Motion, and Catherine Spaak plays a young widow who discovers her dearly departed kept a secret apartment reserved for his serial philandering. Wondering if her lack of sexual experience contributed to her husband’s wanderings, and spurred to curiosity about various carnal practices, she proceeds to seduce pretty much everyone she knows, absorbing lessons along the way. She becomes particularly fixated on the wisdom of Aristotle, which leads to her comically using men as horses (see below). We’re mainly interested in the poster, though, which is unsigned, but was painted by Giuliano Nistri, a conclusion we came to because he painted the alternate Italian promo which you see below, and because it’s very similar to another Nistri poster you can see here. La matriarca premiered in Italy today in 1968. If you get the urge to watch it, try this link.
The only way to learn it is to do it.