One of the reasons this happens is when you are drawing great and fun, and start to loosen up, you get quicker. But, when you worry about speed for too long, you develop tendencies to make each sketch a "stamp" of the last one, and as that continues, they become watered down, and not original.
After the Beastathon I went through a little of that, and now I'm in the process of getting out of it. I had a gig today, and I tallied the amount of faces I drew, which was 53, and I was actually really happy with like 50 of 'em. Hopefully, I can keep this momentum going into this weekend at work.
Anyway, here are the pics I've been holding out on posting for these few weeks. Nothing crazy, just some more fun body situations.