There are some videos here by Reservoir Fibers.  You will also find quite a few other videos on youtube  if you just search Fancy Kitty drum carder/ fancy kitty picker/ fancy kitty tumbler/ fancy kitty blending board etc.    Thank you for your interest.

Videos are grouped in categories by the tool used in the video.

Drum Carders
Blending Boards
Pickers & Tumbler
Misc.