Linda Barry:

One of the things you’ll hear people say, when they tell me they wish they could draw, is, “I see it in my head, but I can’t get it onto the page.” And then I have to remind them that what they’re seeing in their head is not a drawing. Drawing is something that has to come out of your body.

…

My task — and it can be done within 30 minutes — is to get them past that. … The easiest way to do that is to have them close their eyes and draw. … The trick is to show them that there’s another kind of drawing that is very different than representational drawing