You will need to Visit the Magic shop and Buy one of the Frames , back to your home and drag the Frame out to your Room then click on the Frame and you will be able to see a Camera-Icon on the right side down click on it and confirm to take a Photo of your Pet and her Lover, if your are not happy with the result just close without saving and you will be able to take a Photo again. After you took the Photo you will be able to change the Background Color choose any you Like and if you are Happy with the results just click the Save-Icon.