In the app, you can use a photo filter for photos that are beautiful but of lesser quality. Sepia, black-and-white and warm tints are nice filters. The blur will be less noticeable on your postcard or video card. Simply add the photo then click on it. If possible, use smartphone photos that are at least 1831 x 1276 pixels. If your smartphone is less than four years old, any photos you take with it should be of good enough quality. Tip: don't zoom too much when taking a photo. A zoomed image is not as sharp.