Nityananda Chandra Das has uploaded an instructional video about putting on tilak on the home page. It doesn't describe any of the other body markings though, just the head.

http://www.krishna.com/en/node/1585

Here are the other markings.

forehead - om keshavaya namaha
belly - om narayanaya namaha
chest - om madhavaya namaha
neck - om govindaya namaha
right belly - om vishnave namaha
right arm - om madhusudhanaya namaha
right shoulder - om trivikramaya namaha
left belly - om vamanaya namaha
left arm - om shridharaya namaha
left shoulder - om hrishikeshaya namaha
upperback - om padmanabhaya namaha
lower back - om damodaraya namaha
back of the head - om vasudevaya namaha