Thought I would follow up on this thread. When I add the Tungsten Powder, it turns the Alumilite White and microballons gray to black, depending on the amount of Powder added. Now this is not a problem, if you are not using Alumilite Dust to color your project. If your Alumilite Dust color scheme is one that is best done on a Black primer, then it will work very well, but I was trying for a lighter color.
I learned two things. One, doing it the way Mike said is so much easier then the skin method I have been using. Two, I will either need to go back to the air brush, or pour a skin first and then follow it up with Tungsten Powder, Microballons, and Alumilite White.
I am sure open to other ways to add Tungsten Powder and use Alumilite Dust at the same time. Please let me know if you have a method.