The most important bit (and the bit that is a total pain in the behind) is removing your scent from the antler, and also removing your scent from your boots and everything else you’re wearing when you plant the antler. You basically need a dedicated set of “training clothes” that never go in the house to absorb the house smell.
Tracking you, if you’re “smelly”, to a placed antler is easy. Finding an antler dropped by a deer without your scent around is hard.
That’s where I’ve had my issues with my pup - I don’t have a strong enough desire to go the extra mile to descent myself and my training antlers, so it doesn’t translate the best to the actual thing.
Regardless, it’s a great excuse to get out and about with your dog, which is my primary reason for doing it!
Edit: And look how proud the little moron is (that first picture makes me laugh, you can see her pooching her lips with pride and excitement), even if I spotted the shed and basically brought her into it. Dork!