For a 3D Navy helicopter cake topper, use fondant or gum paste over a wire or rice cereal base, shaping the body and adding rotor blades with support. A Royal Navy cap topper can be made with white and black fondant, plus edible gold paint for the emblem. For a full Royal Navy cap cake, bake a dome-shaped cake, cover it in fondant, and add details like a visor and emblem. Look for “fondant airplane” or “police cap cake” tutorials and modify them. Let me know if you need specific video links! 😊