Yup, I'm often worried that I'm overstepping and I like to have my work reviewed by folks like Johnny Silvercloud, Allison Gaines, or Marley K. Sometimes our prejudices are so deeply ingrained that we're completely oblivious to them. All we can do is make a sincere effort to do better. But you're right, as the saying goes... sometimes it's better to remain silent and be thought a fool than to speak and remove all doubt :)