To remove a mask, just click on the photo which has a mask you want to remove and hit the delete key on your keyboard. If you want to add an outline (border) to your photo, please watch the video clip, “Adding Frames To Online Digital Photos” at this link: http://www.smilebooks.com/photo-book-software-guide.php
To change the shape of an image box, just click on the red dots found on the edges of the image frame and drag them to the required shape. You can also rotate the image box by clicking on the red dot located inside the image (top/middle).

Let me know if you have any further questions – Tracy