Your goal should be to force readers to engage with your ideas not to get distracted by sloppiness. Avoid, in particular, phrases like "I believe A spaghetti diagram is just a waste of toner.
Leave your soap box in the store room, your high horse in the stable, and squelch the sarcasm.
Make life easy on your reader. I don't feel the need to say something like, "As a Caucasian, middle-class man in my early forties speaking from this point in the early twenty-first century, I believe that hungry people seek food.
Avoid extended quotes. This fact should condition everything you do in a proposal. Grant Advice I am a biological anthropologist by training and yet many of the questions on which I work can easily be approached from the perspective of social anthropology.
Think about the generalizability of your statements. While committee work of any kind can be a hassle, there are definite up-sides to working on scientific review panels.