Start with the simple counter canter loop in a counter pattern.
The counter canter loop is first found in 1st level tests. We are going to ride it in a counter pattern though, that is instead of from the track to X and back to the track, we are going to ride it on the right rein from the centerline to E and back to the centerline as shown in the illustration.
Starting on the right lead in the corner by H make a 10m demi circle right and ride back to the track towards E and then ride back towards a point on the center line approximately 5m in front of A and make a 10m demi circle in the corner by K. Go large to H and repeat.
Try it on the left lead now, starting in the corner by M, make a 10m demi circle left and ride back to the track towards B, then ride towards a point on the centerline approx. 5m in front of A and make a 10m demi circle in the corner by F, At F go large to M and repeat.
Once you have this counter counter canter loop nicely balanced, it is time to up the difficulty a little.