A quick starter task, wear your skirt with a tight t-shirt and no bra. Insert your butt plug and put on some nice panties. Go into somewhere busy like a mall or fast food place then go into their restrooms. In a stall remove your panties and hide them somewhere in the stall.
Now go back out and browse around the mall (or order and eat if you're in a restaurant) for at least 15 minutes.
Return to the stall to find your panties and put them back on before heading home. If they're gone then too bad, you go home without them.
Provide photos of the panties hidden and an upskirt shot to show you are out in public without them on. Placing your phone on the ground or a chair works nicely for this.
Looking forward to seeing how you go. Do well and you'll be getting lots more.