So here's my advice on how to prep for a successful equine photo shoot. Before anything else be sure you've found the right photographer for your personality and that you've seen examples of their work.
Ask for a pre-shoot consultation to discuss what you are looking for in your photos. Discuss your horse's disposition and location for your horse photography session.
Two Weeks Before Your Equine Photo Shoot
Schedule hair and nail appointments.
Put together your outfits and send for cleaning as necessary.
Gather session tack and accessories.
Scout location! Look for great backdrops and lighting.
Practice your equine photo shoot hair and makeup.
Three Days Before Your Equestrian Photo Session
Clean all your tack, even backups. You never know what will inspire you!
Clean up the equine photo session areas like the area or barn aisles.
Pull manes and tails, trim legs and faces.
Make sure all paperwork is signed and necessary payments have been made.
Day Before Your Horse Photo Shoot
Bathe your horse.
Double-check and pack your outfits and accessories.
Prepare and pack all needed tack.
Morning of Your Equine Photo Shoot
Feed your horse a low-energy meal.
Give nervous horses a light work out like lunging. Rinse to remove sweat.
Treat any stains that appeared over night.
Re-trim muzzle and any stray hairs.
Groom your horse to show quality. Apply sheen spray, face and hoof polish, etc.
Before the Start of Your Equine Photography Shoot
Last wipe to clean any dust off tack.
Wipe horse's face and mouth. Re-apply spray to polish horse's coat.
Shine your boots.
Apply fly spray as necessary.
Touch up your makeup and hair.
Clothing check for dust, slobber or stray hay.
Be sure to hydrate.