Here’s my pencil illustration for the the thumbnail I previously uploaded. I went with the underwater city. I took some of my inspiration loosely from those great Jules Verne books, 20,000 Leagues under the Sea, and all the vintage diver stories. I’ll also post my inked / copic tone marker version at the bottom. Ink and copic markers are new media for me. I also am working on Mylar / Dura-lar, which is helpful for making frequent revisions, especially with ink.