In our fourth video with Laurens we observe him teaching a lesson with a top young rider and a seven year old stallion.  They work on carrying more weight on the hind legs and then ask him to go more forward.  He has very big gaits so they are careful to keep him uphill with the collection available.  In the canter work they also think forward with an uphill tendency, even when collecting.  He has to take the weight without being held.