Doubt in my own art

For those of you who sell your work, did you ever deal with imposter syndrome? Like feeling like your work isn't actually good or made well? I ask because I have been doing stained glass for a while now as a hobby, and often just gift pieces to friends/family, but I really want to start selling some pieces at a local farmers market next summer. But I have horrible imposter syndrome and convince myself regularly that because I'm not as good as people who have literally been doing this for years that I just shouldn't do it. If you experienced this, how did you get past it?