There is a fellow in India named Sourabh Phadke who has been uploading many videos to YouTube lately that relate to earthbag building. His general collection of videos is grouped at www.youtube.com/antiismistix.
I especially recommend viewing “How to Build an Earthbag Dome” and “Earthbagging at Aman Setu,” about building a school.
He has a number of videos showing the result of various experiments with natural plasters on the the earthbag walls that are also instructive: www.youtube.com, www.youtube.com, www.youtube.com
All of these videos, along with many others, can be viewed on our website at www.earthbagbuilding.com/videos.htm