I am finally able to update this post. I didn't realise until about a week ago that the videos were unavailable and I had to go look for the original Japanese video. After much trial and tribulation, I was finally able to find this video on how the Japanese make their anime figures. Unfortunately there is no English translation but its still a fascinating watch.
And in another video you can view Master sculptor Bome sculpting Murakami. Again, no English translation but still awesome to watch.