Another way is the Wet Footprint Test. Wet your feet and step on a piece of paper,(dark like contruction Paper) be sure you are stepping on a hard flat surface.
If you have a high arch (as some said) your print will only show the forefoot/toes and the heel, nothing in the middle
If you have a normal arch you will see the the forefoot/toes, heel and and a more slender area in print in the middle. The area where the arch is will not show print, therefore the imprint line will curve inwards, making the middle of the print more slender than the foot and heel.
If you have a flat foot, most if not all of your foot print will show.
There will be little no inner curve on the print for the arch. I have totally flat feet (no arch) and my print looks like a duck footprint. This is extremely flat, but usually rare. There are different degrees of flat feet. A very low to flat arch is considered flatfooted.