Here is a piece of advice from the latest essay, which ran in BN Review:
13. Assuming you are a writer, be bitter, as in "I might just as well string myself up--'Damien's Curse' is that good." Or "I threw my computer into the furnace after I read 'Some Statistical Variations in the Populations of Small Towns in Central Nebraska.' "
You can read more advice on writing blurbs here.