Just get a sense of what you like and how you feel with the horse. If your not clicking with them, then you're just not clicking and you can't force it. Your horse will find and you will know when it's the ri
First I would recommend working on the flat, walk around, to see how the horse is acting and give you a chance to get a feel. When you feel comfortable you can start trotting and after that canter. Then I would do big and small circles, transitions, some patterns, half-turns, serpentines, changes of direction, flying changes (if the horse does them). See how the horse react to these exercises. Actually there’s no need to make complicated, you just need to know if the horse makes you feel good. If you are ok on the flat and you are trying a horse to buy/lease in order to jump, you should then try jumping. Keep it simple, jump small, don’t jump higher than the horse can jump. Just remember to take your time and try to figure out if you feel right with the horse. :)
Hope this helped !