Could I make a decent amount of money doing BBW pornography?

Having dated a BBW porn star, the short answer is NO.

For porn films, it's a niche market in an industry already imploding from piracy and the destruction of home video. Same goes for just doing porn pics. About the only way to make "decent" money would be to set up a website and have exclusive content. And a hook - something that would make you unique among all the other BBWs also running sites.

But right now the biggest obstacle is your own attitude "...that's enough about my appearance(I'm actually terribly insecure/shy)..." I'm guessing you can't afford an experienced photographer who works with nude photography. The best of those folks can still get good pics with insecure models. Otherwise, your insecurities are going to be very apparent. Most people who look at porn want models who project confident sexuality. Someone who's eyes say, "C'mon, get your butt over here and ravage me. Or let me ravage you and rock your world."

To also be brutally honest - and if you can't take what I'm about to say then you have no business trying to be a BBW porn model - your C-cup boobs are also going to limit your appeal. Most financially successful BBW models have D or larger because that's what most BBW admirers want. Especially the ones who don't do actual porn videos. Samantha 38G only did print porn for the first part of her career (back when magazines paid good money for shoots).

Again, you're gonna need a niche to get around that. There are 2 women with websites (Mandy "My First Fat Girl" Blake is one, the other I can't think of right now) with your pear-shape/smaller tits that do pretty well because they specialize in doing girl-girl. Perhaps you can build up a portfolio of content doing fetish outfits (school girl, teacher, dominatrix, cop, librarian, etc). But also beware of early success - everyone is looking for a fresh face, flavor of the month. This can mislead you into thinking you have a career. My brother was a fashion model, first in NYC and then in Europe. So he got booked a lot when he first arrived in those places. But without a "hook" soon there were fresher faces.

/r/BBW Thread