Screen printing from sketch book

In the latest group tutorial it was said that I've not been pro-active enough for this project and the fact that I haven't started screen printing yet was a big problem - so I scanned in various different types of illustrated planets from my sketchbook and prepped them for screen printing to see what aesthetic translated best. 

Naturally, the bolder line drawings printed really well, but I'm more attracted to the expressive brush work of the larger ink drawings - I think that if refined a bit more and bitmapped, they have the potential to be more impactful when screen printed