Is this a creative way to ask a girl to prom?

I spray painted on a wall PROM? It's not too big, about 5 palm sizes and it's in a corner. It'll be behind us, when we're looking out at the view and when she turns around to sit on the ledge, she'll see the wall behind and the PROM? and that's when ill give her roses and say "will you go to prom with me?"