Ah, I can understand that way to well :'D
From my own experience, the faster you loose the "my art is bad" thought, the better. It just hinders you from doing stuff. Think of your story as an opportunity to learn. I read a lot of stories with "meh" art but I still love to read them.
Having a lot of ideas and never bring them to life is normal (or at least I hope so?). And I kiiinda struggle to do it myself. I have like a 10 page thing, under that and the story will most likely not survive ^^' and I don't realy know, why I was continuing my current story back then, as it was meant to be a stupid one-pager. Sometimes it just works.