This is a portrait that I took of my sister, and I took photos of her playing, and I took photos that were kind of casual. Some of them were captured, while others were posed by herself for me. The shooting process was very pleasant and well coordinated.I learn the photographer is Wolfgang Tillmans, I think his portraits are casual, and there is a kind of artistic conception, by taking moments to capture the essence of things, can be expressed somewhere when the most true feelings, so I'm not confined to be taken when the position decision, nor deliberately decided to pose, but snapped down when the sister to play, there is a portrait is snapped down when she jumps in the air, and one is when she didn't walk on the grass to stabilize snap down, is also shot her when she was playing tired thinking. I used daylight and home lighting for most of the photos, and the picture was simple. I also used the rule of one third and depth of field to shoot.I shot this portrait series is want to leave for my sister good memories, but also because I like taking pictures for my sister and sister also like being photographed, and capture always can produce unexpected expressions and movements, make the photo become very interesting, lively, lovely, every photo shows her happy childhood. In these four photos, I think every movement of her is just like dancing, with different movements and expressions, which is very interesting. Therefore, I think these portraits are related and belong to a series.