How to take a nude selfie

Basically I want to take sexy nude pics to send to someone I’m not putting my face in that is a no no but then alls what’s left is my body and I want to wear something sexy and maybe do a full body nude but I’m really fat so how can I make myself look good and thinner in sexy positions n stuff and also how do you take ass pics I hate my ass so what angles make it look good and also how do u twist to take it lol