So, if a piece took you 10 hours to make, you want to get $15 per hour, and the materials cost you $45, you could use $195 as your starting point (10 times 15, plus 45). Cost of materials would include your canvas, paper, paint, ink, and so forth.
What Sells Best On Shutterstock?
Some types of photos that sell best are Portrait Photography, Food Photography, Landscapes (usually with people) and fine art photography (artsy).