In reply to Crossed Lowercase q:
I've written lowercase q with a crossed descender since I was in college, and that's a long damn time. I can't remember anyone teaching me to make q's that way, but I surely didn't invent it. I either saw it printed that way, or saw it in someone else's handwriting. I picked up the habit of crossing my 7's (considered an affectation here in the US) from a friend of mine around the same time, and maybe he crossed his q's too.