Inspiration was from everywhere. Japanimation, video games, comics...movies, etc....
Oh books heavily.
My advice to those starting out?
1) Work in some kind of down-the-line format from the start. If your comic hosting site says 800 X ? sized pages, do NOT make that your working size. Work big and scale it down from there. You never know.
2) Save EVERYTHING. I do not care how much better you get or think you'll get. Save everything. Out of HD space? - buy some flash drives.
3) Save often and save multiple copies/versions in case of HD failure or corruption.
4) Don't share everything, Just because it's 'finished' doesn't mean it has to be uploaded. Spend some time getting good. What comes out should be your best. No one would ever know it took a hundred tries or 50 other pieces of crap to get those few gems. All we'd know is 'you're a gem maker' lol
5) Start small. Yes, you want to do a sweeping saga with 100s of characters. Start with learning how to tell an interesting short story. Why? Your future dream saga is actually a chain of interesting short stories.
6) Once you're decent, get to your readers as soon as possible. Do not get stuck making comics or art for other artists or other comic creators. That's a feedback loop of static and noise.
7) Get a thick skin ASAP no one should like your work. No one SHOULD like your work. Either they will or they won't. If you did your best, you should be comfortable with their feelings and they should not affect yours. If you did the right thing during your working-stages, you should be able to defend your work, not argue against their feelings/opinions.
8) As far as getting critiques and opinions and feedback and reviews. If you know you have an issue and feel like preparing people before they check your work, you should fix that issue first. If you are tempted to say things like "Hey, I know...[insert thing that's lacking] needs work/could be better" just go fix that. Listen to your little voice. It rarely lies.
9) Know the difference between all the feedback(s). Throw out someone who says 100% dislike and throw out someone who says 100% like. You want the " I like it and would like it more if you..." and "I don't like that much, but might if you...." those two are worth paying attention to. Which is totally different than "WHAT I WOULD DO IS..." that's creator-level feedback. Again, there's a difference between "What you should have done is..." and "Oh, I see what you did there, but I was expecting...".
10) Just start. Nothing ever gets finished that wasn't started. Part two: know why you're creating and what finishing means to you and act accordingly. I know a lot of people with "plans" and "dreams" and "passion". Sadly, not all of that translates into real time, energy,effort and work.
Beware of those who know everything, but do nothing.