I must be a grumpy old fart too because Jennifer's slithering out of actually drawing anything is really getting on my nerves.
Ditto Camilla's impatience with having to draw straight lines. 
And that bloke who dab dab dabs....it's like he's doing it that way so he doesn't mess up straight lines.
That said it is very interesting and the mentors are quite good. Mariella and the Rev don't add much though.