If so, you’re probably better poised than we are to win a contest kicking off today. So listen up artists, armchair critics, and wannabe designers: HarperCollins, in collaboration with the Saatchi Gallery, are sponsoring a competition to design a book cover for the forthcoming The Last Days of the Lacuna Cabal, Sean Dixon’s debut novel. To all our artsy readers: opportunity knocks (though we’re not making any claims about fame and fortune). The collaboration......