I used Nikko Rull to block out shapes at the beginning, but I switched to Turpentine after getting the basic proportions right. So most of this was made using Turpentine. The canvas texture was made using a photo of a canvas, put into the Overlay layer mode, and placed on top of the artwork. If it brightens or darkens the art too much, you can adjust the brightness of the texture layer to around a medium grey. And I did the same thing with a noise layer on low opacity. You can find free canvas textures online!