Promoting blender in Science fiction conferences, Need help with Digital Makeup

Hello

There are two big SF conferences here each year, and we have already a stand for promoting open source.

I want to promote blender as well and I thought that using camera do motion tracking Digital Makeup for vistors who will come. like this video:

I didn’t find any tutorial to do this, and I appreciate your help, by giving explanations or doing the blend stuff mockup which blender need for blending the visitors