Speedpaints are images that take a maximum of 1 hour to paint. Some of them are made for a speedpainting group on FB such as "Super Speedpainting Funtimes", or "Daily Spitpaint". (Daily Spitpaint only gives you 30 minutes.) In this case, the subject is dictated by the group, and every participant makes their interpretation of the subject.
Some of them are freeform: the subject is made up by me ;)