We can print onto A3 icing sheets which are 29 cm x 42 cm so they are ideal for the larger cake. You can define the size of the actual topper you want printed and don't forget to tell us the shape - circular or square and give us the dimensions in the special instructions box. Please make sure that the images you submit are large enough so that they retain their sharpness upon printing. The topper comes pre cut and includes postage and packing at second class. If you are unsure then please don't hesitate to get in touch with us - firstname.lastname@example.org and we will advise you!