Ok, so get completely naked. Then shave your legs if not already the case (if you are not comfortable with shaving them completely, you can only shave the part that's visible when wearing that dress).
Then once you are shaven, grab a marker and write the following words on your body:
"SISSY SLUT" over your chest
"CUM HUNGRY SLUT" on your belly
"DIRTY" on your left thigh
"BITCH" on your right thigh
Then put on the panties and the dress. Now do some sexy poses including an upskirt pic for me. Once you done that, put some sissy porn on, slide the panties to the side and jerk your tiny little clitty for me until you orgasm. Cum on the floor, then lick it all up like the good girl you are ;)