See the full interview on Tor.com.
What kind of research did you do for the book, either for artistic inspiration or for historical details?
It’s a bit dangerous for me when the setup is as interesting as WWI. I actually had to pull back a bit as my research was taking away time from the art at points and it was making me far too pedantic about my details. That might have been fine for a drier and harder type of alternate past story, but I knew that Leviathan was meant to be a rip-roaring type of adventure and that a fun and fantastical angle to the art was extremely important.
I also wanted to have the historical setting somewhat pliable, as it would be a very bad thing to plunk all these walkers and beasts and things in the middle of history without having ripples spread throughout the setting; changing little things from how a nation’s cavalry uniform looks to how a culture’s architecture has evolved.
I’m learning new interesting things all the time and compiling them into a pretty elaborate collection of research. I’ll be researching right up to the last illustration, and will probably have collected a monumental load of brilliant things I’ll wish I could have incorporated but couldn’t fit in.