The most important thing is to use clear images, where the animal's markings are easy to see. Here are some additional tips:
• Horse should fill 90% of image without any humans in the picture.
• When taking the side view pictures, separate legs to view inside limb markings.
• Pictures should to be taken outside, or in very well lit settings.
• The sun or light source should be behind the photographer.
• Horse must not be wearing blankets, shipping wraps, etc.