That's right I've been submitting stuff the last few days.
TBH drawing has become downright painful for me because I have this horrible tendency to... not blink. And my mother's an optometrist, it's a big deal - she'd always remind me to blink when I'm drawing.
Since I live on my own these days, I just forget to blink and MAN does that hurt or what. Half an hour in I'm like "Shiet man, why the hell are my eyes so sore, and my head is aching?"
So yeah, lesson of the day kiddies. Blink when you're drawing!