Thought I'd share some of my process work for the caricature that I'm working on now.
2 minute scribbling to get the composition and idea out into my sketchbook.
An hour or so (roughly, I draw inbetween taking calls at work, so it's hard to estimate). Illustration board.
Final sketch, made some composition changes. Once I finish the last few things, time to ink it up and splash on a ton of colour!