I have began a mural painting course last year, specifically fresco painting, and this year we have started with the actual painting practice, putting the lime plaster layers and painting. Each student has a 1m2 wall on which to practice, and for now we've been focusing on copying other paintings to get the hand of the technique, which I found is surprisingly intuitive and easy to work with. These are 2 of the studies I did, one after michelangelo and the other after verrochio.