PS技巧

蒙版：http://www.3lian.com/edu/2010/01-20/57569586390.html

抠图：http://jingyan.baidu.com/article/36d6ed1f3392d31bce488358.html

http://jingyan.baidu.com/article/86112f13452a55273797879d.html

http://jingyan.baidu.com/article/215817f7f944d31edb142346.html

http://jingyan.baidu.com/article/f71d603746304a1ab641d1b0.html