I'M YOUR fan. l love your works so much! my english is not good! would you please tell me how to use flash? how to keep the light so nice? would you mind tell me the material of the DIY diffuser?thanks a lot!!! 老师你好!我是你的粉丝!能告诉我你是怎么柔光的吗?光如此柔和,细节如此出众!可以告诉我用的什么柔光材料?谢谢!