Yes I agree with sara, although it could be your fault clashing with your horses lack of expirence. Figure of 8's is very good, make your circles smaller and smaller. Also with your position, lift your hands, lift your seat. Some QH find it hand to lift up-easy on your hand. Although the high head carriges are naturally good at it, rather than those western riders which make there horses heads low and heavy.
So freerider, could you please discribe your horses conformation, that might make it a little easy for us guys to figure it out