My advice...hummm, lets see. How about when you.....no, ummmm, when they....huh? OK, the truth. This was the first time I took pictures of twins and they were beautiful, quiet and stared at the camera the whole time! So Iv got nothing! They were absolutely amazing models and it was one of the first time I left a house not wondering why I love the world of children's photography! It was also one of the first time I almost lost of the parents rings! OOPS!