Waist slimming trick

One trick to look slimmer is to have a small waist.

I train my waist with simple stretching exercises and also I use a belt to train/tighten my waist area. It’s simple and looks just like in this picture. I do not wear any slimming corset nor worn any before. 

Waist training is very effective as I started training since I was 15 years old. Till today, my waist is rather tiny for my height. 

How do you keep your waist trim?