Hey, don't panic!
Like everyone here, I've spent years studying and drawing. I can do it without the shortcuts!
It's just nice to dream sometimes that there is an easier way, but I guess if there was, no one would bother painting at all.
We need people like Hockney to rouse us out of our complacency occasionally and he certainly got plenty of discussion going.
Must admit I have bought an overhead projector though. Can't say it does the job for portraits because the lines are too blurry. It is however excellent for silk painting and my 4' x 3' tropical fruit and flower paintings.