After some more time on my skateboard, I can not regularly do a kickturn of more than 90 degrees, but only very rarely a full 180 degrees. I am becoming increasingly convinced that all skateboard tricks (warning: links have sound) are primarily about balance. As my balance improves, everything else I try comes almost without thinking.
(Aren't those skateboard videos amazing?)
I can find very few videos of Chinese brush painting online. (Link has sound, obviously.)
