The only thing that you mentioned that would make me a little bit nervous is that you have been working entirely by yourself. I would think a github repo with

The only thing that you mentioned that would make me a little bit nervous is that you have been working entirely by yourself. I would think a github repo with 1000 stars would give you the opportunity to work with others. Maybe start accepting some pull requests, or join another open source project. Otherwise, everything else that you mentioned seems like pretty run of the mill imposters syndrome. You built some products, and real users ended up using these products. That seems like some pretty solid experience right there.