I have the steps for attention training on my website:
http://www.kippsdogs.com/tips.html
I do it a bit differently, but the end result is the same. I want my dogs to have to make a conscious choice to take their attention away from the treats, so I set it up that way from the beginning. I have my students start by sitting and holding treats in their hands, with their hands on their knees within easy reach of the dogs. The dogs lick and nose at the hands for awhile, but eventually they do look up and that's when the handler is to mark the behavior (click or "YES!") and follow with a treat.
Once the dog figures it out, they immediately snap their heads up to look at the handler's face. It's a gradual process though. Once they understand what gets them the treat, then the handler can start to wait for two glances, or lengthen the time they look up, etc. At this time they can also vary their position - standing with dog in front, standing with dog in heel position, laying on the bed - whatever they want!
I can hold a treat out to Khana and she will whip her head around and stare at my face, even though I'm lifting her lips up with the treat. She won't take it until I mark the behavior with my "YES!". I've used this method on all of my dogs, all the dogs I've trained in the past 10-12 years and with all of my students and it's been extremely effective.
Good luck and be patient!
Melanie and the gang in Alaska