Space for for bit.ly s in lower left box. 300 dpi for printing. $107 for 1000 at uprinting.com. better yet use a local press! $35 per hundred postcard stamp. easy cheap influence. business accelerant. 6″ x 4″. make them all the same! or make them all different! (like me) be happy. work from home. patreon.com/lostinmist.