You have several options here.
1. Dress as completely as a woman as you can and then be seen by at least 1 person.
2. Wear panties, go to a public bathroom with people in it, then go into the toilet and pull your pants and panties down around your ankles and play with yourself for 3-5 minutes.
3. Yell, I'm a sissy cum-slut, I want cum on my face!!! So that, at least 1 person hears you.
4. Wear a butt-plug and panties, and flash somebody your plugged ass
Do you remember what your dream is sissy?...