Outsider's Sky was my first real attempt at a long-format comic project. While technically not The Shell, the world of this comic is a kind of proto-Shell. It has a lot of the same elements: lizards, airships, monolithic stone towers, etc etc. This is old, from high school, and a little bit embarrassing in parts, so please reserve your judgement.
I actually have 28+ pages of this thing to post, which I'll be doing in the coming months. weeks.