Answer
If your image looks stretched vertically or horizontally, you may have inverted the measurements. Signazon.com always measures height by width (H x W) in inches. When you select size on the website, height is always the first dimension, not width. If you entered your measurements in width by height (W x H), your graphics will appear stretched. To fix this issue, simply re-upload or redesign your file with the measurements entered in height by width.