Fly.

"Don't be angry because you put too much time into your drawings. Those who go slow, go healthy and far, and things done quietly are often the best. Shading? Don't say that word. To tell the truth, shading is a problem for everyone. However, this so-called "art-block" is from observing the designs of others. You see how good their designs are, and then once you draw, you're never satisfied with the result because you strive to achieve the kind of professionalism that others have. But this is impossible. Improvement takes a long time. Everyone should be satisfied with their results, and know their limit.

Show your work without fear of others' comments, which will certainly be positive."