A lot of writers, especially in comics, throw in every gag they can think of regardless to whether or not they are sacrificing the story momentum or mood of the piece. Anybody can write a gag, the geniuses know where and when its time to use them or cut them. Everybody has a mom or grandma to kiss your creative ass. What everybody needs is a core group of close friends and associates that aren't afraid to tell you when it ain't working. Find them and listen.
Egos are for losers.
Both excellent books on the real craft of writing. Luckily, I don't have to worry about designing a silly costume that would never function in real life. But I do have to create identities for realalistic people. I have to find a look that you will find appealing and not distracting, that I will want to draw thousands and thousands of times. Jinx has to be attractive, but not Va Va Va Voom, appealing but not to die for.