Once the rider has gotten the basics down, the rider has now entered out of the cognitive stage, and into the associative stage. In this stage, the rider will be able to notice mistakes made and be able to correct them on their own or with little help. In this stage the rider should have developed the muscles that are used for asking the horse to walk forward, squeezing and releasing of the reins, and the core muscles required to hold a basic riding seat posture.
At this point the rider should not have all the steps down automatically, but should now each step and what order then now fall in. The biggest and most important part of the associative stage is being able to take what the rider has learned, modify it, and adapt it to different situations. This can be anything from being able to learn more about how the horse moves, and how each gait is different on each horse.
This means at this point the rider should be trying to move these learned skills into a faster movement. Trying the movement at a trot, and a gallop are different situations that require the same skills. The situation change from being able to ride a horse at the walk in a circle should positively transfer to being able to ride a horse at the trot. The steps and skills are completely the same, just executed more dramatically with each advance in gait. Keep up the practice, practice makes perfect.