Winter Formal Proposal. My idea to ask my date to winter formal!The key to a homecoming proposal is to factor in what their date likes the most and personalize it to make it memorable. Spell your proposal out in glowinthedark star stickers on your ceiling. Get into bed, turn the lights off, and wait for the inevitable gasp. Discover creative formal proposal ideas and tips for making your proposal memorable. Elevate your presentation with our expert guidance! The following is a practical guide for how to plan a proposal, up to and including thoughts on proposal photos. Are you looking to impress someone when you ask them to be your date for prom? Get creative and try one of these fun prom proposal ideas!