Chris from the DSC club asked me for a caricature last week.  After a few preliminary sketches whilst waiting at the airport  I have bashed this one out.  Chris is a very brainy maths professor with various published  maths books to his name.  I initially went with a big brain box, but no, that cheeky grin and chin was just calling out to me in all its complex wobbly complexity.

Chris Sangwin. Derbyshire Soaring Club.