Artists and teachers usually teach you about colors, composition, mark making - which is all amazing and helpful.. BUT!
Something is missing.
And that something comes to play even before you start painting. Because everyone knows the feeling of getting in front of a canvas and just feeling.. stuck.
The usual advice for starting to paint is to just express yourself, to let loose. But if you ever tried to paint, you know that it's really not that easy as it sounds.
The thing nobody seems to talk about is knowing WHAT to paint. Aka what happens BEFORE you even get to the canvas.
And we're not really surprised it's not talked about. It is a very subjective process after all.