here is some video reference about the "expert" guy doing the cloud~
and i see many them are use the "houdini" software to doing the 3d realistic cloud and looking very awesome!@@

this is my some reference about cloud sea,~
that is beatiful but i never see it before~ because i am a poor guy no money to sit aeroplaneT.T

Finally i create this blog~ Because my final animation video project want create many cloud in 3d  and at this blog i will share some my analysis study and reference, hope you all will like it ~^.^~