Exercise is good for you, or so I hear - and I've been frightfully lazy about bettering my weak areas in art. One of those areas is environments/backgrounds/all those fiddly bits that aren't characters.
So in a sudden surge of self-improvement (and because I figure knowing these things might be good if I ever want to work as a concept artist somewhere), I've started a new regimen - one speedpaint a day, with focus on environments. It doesn't have to be neat, it doesn't have to be finished - it just has to be done. I've spent between 30 and 45 minutes on each of these, so it's not a lot of time.
So here's the first four: