"Is that you?" (Gender, race, build doesn't matter)
"Did you draw that?" (Always while I'm in the middle of drawing the thing)
"Can you draw me as an one of your anime characters?"
"(Why)Are they naked?" Sometimes coupled with "Are they doing something naughty?"
"What are they doing? Why are they doing that? What's that thing?"
"Wow, that's good! My 6 year old -blank- draws really good too!"
"You should apply at Disney!" (Not bad, but impractical)
"Why are you charging so much? You won't sell your art like that."
"I can't even draw a stick figure."
"Can you design a tattoo for me?" (Then they never give me an idea of what they want)
"That looks like your ex." (Worst insult ever. Gender, race, build of character doesn't matter)