水彩技法

http://www.epochtimes.com/b5/7/9/10/n1829242.htm
http://www.wretch.cc/blog/clifftbr/17789212
http://tw.myblog.yahoo.com/songlinart/article?mid=-2&next=838&l=a&fid=11
http://jack6612g.pixnet.net/blog/post/35980097-old-holland%E6%B0%B4%E5%BD%A9%E9%A1%8F%E6%96%99