Cropping means to remove unwanted areas from your scanned image or photo. This process only needs to be done if you have large areas of white paper around you drawing. If you look at the examples below, you can see there is a lot of space around the drawing on the left, which we don't need. We use the crop tool in photo editing software programs to remove the unwanted space, this inturn will reduce the file size, making it quicker to upload. The icon for the crop tool in most software programs looks something like the image below.

Select the crop tool button, your mouse cursor should now depict this icon. Click and drag to draw a box around your drawing. The area outside of your box will be removed when you double click in the center of the box.

Uncropped original scan and cropped image