So this isn't my art, but considering how many dragon nuts are in this thread (myself included obvs), I thought I'd share.
This is Coppervein. The Artist is Ruth Thompson, and she's one of my very favorite artists. I've had it in a box for a couple of months while I decided where I wanted to...
Funnily enough, No! I moved my workspace around to better set it up to paint, and still haven't put a canvas on the easel :p Been doing a lot of 3d printing recently as well as some paying photography work that's taken my painting time.
10-12 on average. Really depends on what I'm working on but in general I try to use as few layers as possible for my workflow. It's a habit I picked up editing photos in bulk.