This trick is just a generalization of the hand touch trick so teach that first and then this one.
Criteria
Dog nose-touches target stick. Show several times in a row, unedited, moving the target each time and varying its height and location. The dog’s nose must touch the end of the target stick. The dog should be targeting the stick with his nose and not his mouth. Videos of the dog biting the target do not meet the criteria for nose target.