Sizing Photo Mats
When adding a mat around a photo, there are two typical methods. One option is to make the mat an even size around all four edges of the photo. The photo is then centered within the framed area. The other alternative is to use the same mat size on the two sides of the image and the top, and to make the bottom portion much larger. As with any situation in which you’re making something different, the effect works best when it is obvious. So make the bottom area significantly larger than the area you add to the other three sides.