JENN HARNEY is the author-illustrator of UNDERWEAR! and SWIM, SWIM, SINK (both from Little, Brown). She also illustrated the picture book HOW TO BECOME A KNIGHT by Prospect client Todd Tarpley (Sterling), and several titles from Boyds Mills & Kane, including Beth Anderson’s SMELLY KELLY AND HIS SUPER SENSES and Shelley Moore Thomas’s PROBABLY A NARWHAL. In…