I think there are a couple of different types of shears. If it's the covered blade type, you just run the blade the opposite way to the hair while holding the hair taut. (The blade won't cut the other way so you will soon know if you are doing it right).
The other type look like scissors with a covered blade on the end - you use those just like scissors.
The correct way to use the clippers and is ok for the horse, its winter and his are super long and furry so I would like to minimalize him getting those ice balls all attached to them! Also I think I should re-word my question I meant: How do I trim the fetlocks with fetlock shears the scissor looking ones >
Or could I just use plain sharp scissors? Thanks! :)