How to add a photo to a dotphotobook
From within your photobook project, tap the PHOTO button in the upper left.
Choose the dotphoto icon to import photos from your most recent 25 albums in your dotphoto account:
Choose dotPhoto to reach a new album; choose Project Photos for the photos that you are already using.
Choose an album to display all the photos in that album.
Hold down your left mouse button, and drag and drop the photo into an open frame.
Once the photo is in the frame, you can tap on the frame, and then drag the edges of the frame to crop the photo.