Collaborative drawings?

From Sarah-Jane Mason

Does anyone else use drawing apps on their phones or tablets? It’s a great way to collaborate on drawings together and I’d love to start a collaboration amongst this network. Attached is an example drawing. This was a collaborative drawing by Simon Turner and I. It was created over a day last weekend and digitally shared using the Sketch app for Android. There are much better and more complex apps but this is an easy way in app so great if you’re new to digital drawing. Anyone fancy it?