If you have a safe fence that you can use to help it makes it a lot easier. It needs to be safe to bump into without falling or hurting the horse and tall enough they don't try to jump it if they think you are asking them to walk to the other side (A regular height fence is fine, 3 feet is not)Definitely going to look into this. I’m new to all the movements like sidepass, etc.
Turn on the forehand (TOF): Stop next to the fence with the horses side against it. Tip the nose toward the fence a little bit and press with your leg on the fence side but a bit further back than normal, you want the horse to turn his rear end AWAY from the fence without taking a step forwards. As soon as you get 1 step, stop all cues and give him a scratch, after about 10 seconds, try again. At first all you want is 1 step when you ask for it, then build up until you can turn until the other side is against the fence. Obviously you need to train this in both directions.
Turn on the haunches (TOH): This one is a bit harder than turn on the forehand. You want to use your leg to press the front end over, using your leg a bit forward of normal while opening your rein and "inviting" the horse to step that way with the front end. Same as with the turn on the forehand, you want 1 step and then give a short break and reward.
Sidepass: Get good at Both turn on forehand and turn on haunches before attempting. Basically, you want to walk straight up to a fence so that the chest is pointing at it, then ask for 1 step of TOF, then 1 step of TOH, then keep switching back and forth until you can fairly smoothly walk the horse sideways down the fence. Then work on getting both ends to move together.