You can hold your chest out if you are fat.
If your chest is fat, put your hand down and take a picture, which may make people see your fat directly. Your hands around your chest can give you some visual protection and make you look less fat.
Put your arms up if you are fat.
If your arms are fat, try to lift your arms and take pictures, so that your arms will be thinner and the whole person will look neat.
Fat waist can be akimbo.
If the waist is fat and there is more meat, it will definitely be exposed if you take pictures. We can put our hands on our hips, so that we can cover our hands and our waist won't look so fat.
If your face is fat, you can lift your head or cover it with your hands.
Fat-faced girls must not shoot straight. To choose an angle, generally speaking, looking up will make her face smaller. If it's long hair, try to spread it out at will and cover your big face. You can also hold your face and cheeks with your hands, so that you won't watch your face get smaller.
Don't wear sleeveless clothes if your shoulders are fat.
Some clothes have no sleeves, but if your shoulders and arms are a little fat, it is not recommended that you wear sleeveless clothes to take pictures, which will completely expose your shortcomings.
You can shoot sideways if you are fat.
If your upper body is really fat, you can take pictures sideways, so you won't be so fat visually.
The above are some skills I have summarized about taking pictures of fat people, because I am also a fat person, and this is also my experience summary, hoping to help you.