I can't lean forward because I have to stay back and have the horse in front of me, and other wise he speeds up too much..
I only ride him once a week, in jumping, and he usually goes to hunts in the weekends and the other days he's used in the riding school so they don't really do so much work with him.. :/ When I ride him dressage, I can get him to go very nicely down with his head, bend and curve the neck. But it takes time since he's so stiff, and that only happens like once a month when I'm asked to ride him an extra day..
This is the kind of pony which you need to do everything perfect with if you want it to result perfectly! :p But thanks for the advice everyone, I'll definetly try them out next time! (Though that will be in a while, he has some kind of sickness and no one knows what it is o.o')
"When I bestride him, I soar, I am a hawk: he trots the air; the earth sings when he touches it; the basest horn of his hoof is more musical than the pipe of Hermes." -Shakespeare