In advance: Make tip 101 roses using royal icing. Make 72 white roses and 34 rose-colored roses, all with tip 4 bases. Make extras to allow for breakage and let dry.
Bake and cool two heart cakes. Trace center heart pattern on cake tops with toothpick. Ice cakes smooth in buttercream with white center hearts. Using script pattern, trace name on center heart; pipe name with tip 4. Create scroll shapes around center heart using tip 2 dots. Attach roses around center heart with buttercream. Pipe tip 6 bead bottom borders; attach roses over border with icing.