Digital Painting Studies
A great ongoing exercise for improving painting technique and stepping beyond one's style is studying the works of artists who are inspirational, or studying photographs to better understand the essential building blocks that make images effective and interesting. Here are a few studies I've done (the bigger image done by me, next to the smaller reference) that have been, in my opinion, successful. I've credited the artist wherever possible. These are typically quick sketches that take 1-1.5 hours.