Custom Heart Cake Cutting Guides Templates. You can edit all text, edit all colors, change fonts, add your logo etc. *Cutting diagrams are not editable* This Heart Cake Cutting Guide Template includes guides for 6", 8", 9", 10", 12" and 16" size heart cakes and includes slicing diagrams for 2" x 1" wedding servings, 2" x 1 1/2" party servings and 2" x 1" x 1/2H coffee servings. Each guide comes on a separate page so you can print the guides individually and add to your cake boxes as needed. Edit