I'm working on another canvas today inspired by Klimt. My approach is usually pretty straight forward. Once I've decided on the general idea for the piece, I simply start with a watery mixture of a neutral tone. Perhaps because my work is often a single figure I don't start with preliminary sketches. It may seem a bit haphazard and I do have to gesso over the odd one, but in most cases I can finish the piece with some sort of satisfaction.