Hi Betsemes, If you want a good product for developing good diaphramic tonality, try a product from Jonathan Altfields page (mastery insight, I think). To practice speaking from the diaphram you might want to remember to pause and take a deep breath before you speak. For using NBG, you might want to model a politican on "Meet the Press", especially one who is getting grilled. Forget about the political crap they are going to spew, just foucus on the fact that they pause and take a deep breath before they respond. Hope this helps.
George
