Upload a photo from your computer or mobile device.
To Crop Photo: You'll find if you play around with the cropping tool that you can change the size of the image behind the cropping template.
On a PC, hold down the control button while using the mouse wheel to change the size. Hold the mouse's left button down to drag the image into the template.
On an iMac, use the mouse wheel to change the image size. Hold the mouse button down to drag the image into the template.
On a mobile device you can use two fingers to pinch to make the image smaller or larger.