Sketched on my phone using sketchbook pro.
I don’t spend enough time using Sketchbook Pro. It is a really powerful app that crosses all the platforms and even is available on all the desktop machines. This is basically sitting down with a beer and making marks to see where they lead.
I got the chance to play with a Nexus 7 yesterday (and look forward to using it in-depth for a while) and opened up Sketchbook to draw in. Really nice experience.