voodoo help

I want to do some tracking . I made a model head in Blender to test in voodoo and rendered a animation. In the animation the was looking into the camera to the left then back. I tracked it free move in voodoo. In Blender I used the camer tracking to put a cube in the animation video like a hat on the model. It worked fine. When I used myself in a video and tracked it. It did not work so well. I want to do the animation like in the first Stargate movie where the armor forms over the head.
Is there a way to help voodoo track where the references are not so clear?
I tried voodoo web site and find the software more easy to use then the website forum.