How do i get her to do this please reply ?

My cousin is so smoking hot like omg she has a nice body and nice hot booty that just drives me wild just looking at it and I have always wanted her to sit on my face I prefer her to reverse facesit me though so I can get a nice closeup view of her awesome sexy booty I would love being engulfed by her buttcheeks yummy!so how do I trick her into reverse facesitting me or how do I get her to reverse facesit me only serious answers don't say its your cousin or incest I just want her to reverse facesit me am not gonna do her so there's no harm done so how do I get her to reverse facesit me?and I really hope she is wearing leggings on the day she does it cus her booty looks so tight and sexy in em