The easiest method is to order the design and size you would like your Sibling photo to be placed in. We usually recommend the Portrait/Individual Design, in the size you like. If required we will rotate the image to be landscape.
Place the order against any one of the sibligs that will be in the photo. Don't change the name, but please list in the special instructions the Names of the siblings as you'd like them shown on the design.
That's all that will be needed. Our production team will find the sibling photo and design based on the information you provided with the order.