I used to feel that way. I don't want to let others see my work because they might think it's bad so I always hide it. But then Research came. You have to show the teacher your papers. That's when I realized that it's important to share your work and let others judge it, otherwise you won't improve. Once I finally managed to submit the final paper, I went to see my folder with all the past revisions. And my God there are so many papers. I formed a tower made of paper. That tower is proof that you keep improving and improving until you finally become good at it and how much effort you put into doing it.