don't worry dude, we all get those days now and then, take some time out, watch a film, go outside something to relax yourself and this picture is Amazing for someone saying they can't draw, well done ^.^
Eh, give yourself a break, dude. Stress is a creativity killer.
I have to say, I admire your ability to be creative under what stress you already have. That being said, the fact that you've actually reached this point probably means that you need a little sleep, and maybe an iced tea or whatever calms you down a bit.