Shaping the shadows (cotton canopy) for bonsai how

Hello people.
I am very passionate about bonsai should really wanted to visit to learn all only hope.
I do not know English to use online services to swap temporarily expect people to sympathize.
By the way I would like people to just help me a problem that I'm confused is: Shaping the shadows (cotton canopy) for bonsai like.
Thank you very much.
Anxiously waiting for help

Maybe someone here can help:

http://caycanhvietnam.com/

Or here:

http://www.flowerpictures.net/bonsai/index.htm

See also: https://ibonsaiclub.forumotion.com/t5314-bonsai-in-vietnam-some-insight

There are a couple of bonsai growers listed here:

http://bonsaitoursvn.com/?view=bonsai

And, of course, look here:

http://www.bonsai-in-asia.com/