Modular character illustration system

Here's a peek into the illustration system I've been working on in Sketch. It starts with a base symbol, and all the characteristics can be modified using the simple dropdown for overriding nested symbols. I hope to add more options, to pump up the variability even more, with different eye shapes, face shapes, etc. More soon...I also did this with objects and background scenes too! So fun.

I was inspired by how @Pablo Stanley made Humaaans.