Hello. Just saw your message.
From what I'm reading, it sounds like you're desperate to improve your craft and who says you can't make a good story? Don't be discouraged. Ideas come and go but the best ones will eventually stand out to you.
Also, I have a story and I really want to visualize it. But because I'm not an artist, I'm stuck. Do you want to give mine's a try? It doesn't matter to me if you're just gonna practice drawing the scenes either. Hope this helps and thanks for joining the forum...