I've received a few direct messages to my instagram account asking how I achieve my rendering style. It really takes only a few steps. The key is to get a basic sketch with great proportions completed as a nice underlay. Then the rest is simple.
I hope you enjoy this tutorial. This sketch style has been very liberating for me as it has allowed me to spend more time thinking about blocking in the big-picture design gesture and less time fussing with each individual element.