I LOVED Nausicaa!!
I'm also wondering about your reasons for wanting to self-publish? It can be a good decision for some, but not for others. I'm just curious because you said you are new to the industry and don't know a lot about how it works yet. I'd read our self-publishing threads here if you haven't already, to see what's involved. To self-publish well, you really need a good head for business, and the time to be your own marketing team, designer, copyeditor, etc, or have the money to pay others for these services. But also check into traditional publishing as well. It could be that self-publishing is the right choice, but I'd make sure you've researched all avenues so you can make an informed decision on how best to publish your work.
Your art is fantastic, btw.