Courtesy of Matthew Clark, here's the process he took for creating the amazing cover to #20. Firstly, the rough layouts of potential covers:
There are some absolutely fantastic options there - I personally would've loved any of those covers. Any chance of a variant?
Here's the pencilled version of the chosen cover:
The inked version:
And the final pre-coloured version, with added waves:Many thanks to Matthew Clark, for all the fantastic work he puts into this series!