When I was in college I took an art class. It taught me very little other than I didn't have a vision as my professor thought I should. And formal training was not for me.
The one thing he did instill in me was to practice in small doses
I had to create and work out compositions in little 1-inch squares. A page full of squares, and each inch was a composition.
We had to fill at least a page a week, which was about 100 squares a week, we were monitored each week, then graded at the end of every 3 or 4weeks. It taught me to look around and force myself to look for compositions.
Quite a few people do the picture a day, or something similar...I am now trying to do that with my quilting...I want to create original pieces.