It all depends on which side of the desk you're sitting on.
In general, shorter is better. If you can encapsulate your idea into a single captivating sentence, you're halfway home.
I always wanted to fire rays out of my fingertips.
I realized the only thing I owed my audience was my own judgment and my own best effort.
Were there stories I wrote along the way that were terrible clinkers? God, yes. But they were all a product of their time, and I did the best I could.
I hate the crazy, neurotic characters beyond a certain point.