Well, this is a different technique. I like to use a large cork stopper, the kind you find in the jar and bottle section of your local arts and crafts store like Hobby Lobby, regular corks from wine bottles also work well too. I simply place a small blob of Blu-Tak on the large cork stopper and stick whatever I'm painting to it and that's it!
It might be a bit of a hunt to find a large cork stopper but it's worth it and comfortable too.