Your cake sounds good Mrs Groove , and i am really excited about your cake as i have seen many tri layer cakes but your cake have something different, in your cake i love the stars you are putting on your third layer thats look amazing, and your top layer with cracker feel hearts at top end is unique idea. If you won't feel bad than i would like to share some different idea about your wedding cake you can take up, cake with design of your partner's structure and one another with your's structure holding each other together with a cool background..that looks amazing.If you want want you can check this type of theme on many websites with theme wedding cake.