The only answer worth giving is “hard work”. You could get a million different stories from a million different people about how they started working with Blender. I’m sure some of them would be interesting stories, some might even give you an idea on what to do to start getting 3D work, but ultimately, these people are different people, in different situations with different opportunities than you.
If you really want to get paid work with Blender, carry on using it. The only way you become a good modeller/animator/rigger/VFX artist is by doing modelling/animating/rigging/VFX. When you’re comfortable enough with it and you feel like you can take on a client, go out there and start meeting people. I’ve found a lot of my work through small production companies who are too small to have their own full time CG artist, but still get jobs coming in which requires one.
The main thing about getting work is having a showreel and the best way to make a showreel is to get work. I started off making graphics for projects my friends were working on. These were unpaid projects, as my friends were doing them off their own backs, but still had deadlines, an audience and the fear of people thinking how terrible something would look if you did a bad job. Keep on doing these jobs as it’s experience for working in a team, people will see your work and it’s stuff you can put in your showreel. If you don’t have any friends who need your CG expertise, then there are many job forums on the Internet which are film related, often split up into paid/unpaid. There’s even one here on Blenderartists. There’s also Mandy.com, Creative Cow and I’m sure many more if you look. The main thing here is making contacts, it’s the most valuable thing you can do as these contacts are the people who will come back to you in the future with more work.
It’s worth thinking what exactly you want to do? I’m a 3D generalist if anything, so I work on smaller projects, but I work on all aspects of the 3D process. If you want to specialise in something in particular, e.g. modelling, you’d be working in a team on bigger productions which can afford specialist rather than generalists. This puts you at the mercy of the production company as far as what tools you use. If they want you to sculpt in Z-Brush, you’ll sculpt in Z-Brush. This isn’t a big deal though, it’s good to have many tools on your belt and having experience in different applications is great.
As far as proper education goes, it’s in no way necessary. It’s very useful to have, you can learn a lot and meet lots of like-minded people, but it’s not a requirement for the types of jobs we go for. I have degrees in Electronics with Computer Science and Documentary Film and Television. I’ve never been asked about my education for a job. They just want to see your work and for you to tell them what you can do for them.
Work hard, but have fun. There’s no point if you’re not having fun