By this I mean he should stand tied quietly and cooperate with the farrier. Biting, kicking, and jerking horses do not endear themselves to farriers. It is hard to shoe a horse on the way by. Remember, don't expect your farrier to do extras, especially for free, such as clipping bridle paths, booting, floating teeth, and putting on hoof dressings. All these things take time, even if you supply all the needed equipment and supplies.
Time is money to a farrier.
Last but not least, payment in a timely fashion is always appreciated by farriers. Remember, your payment is his payday. He doesn't have a monthly salary or regular payday. But he does have bills from people like you. Stall built for horseshoeing.