Cowthulhu Redux by Meg Lyman
8×10″ gouache and ink on board
I sketched one up in 2008 and had to redo it, this time with more spooky noisomeness. Original sketch for your reference.
I did this with a semi-CMYK palette and I really enjoyed it! My colors were Schmincke Delft Blue, Schmincke Magenta, Holbein Permanent Yellow, Daler Rowney Lamp Black, and M Graham Titanium White.