Like Shanes300 said, keep it low, but not so low so that you don't have time to recover. Get fairly high and get to know the planes tenancies as far as taking note of what inputs to make. Since you can hover, now its time to let it torkroll. My technique to not getting messed up at the belly is PUSH THE STICK TO THE WAY THE AIRPLANE IS FALLING OUT. This method has worked very well for me. Also, be careful not to over-control. As for pitch, just think of it as if you were flying inverted when the belly is toward you. Pull to pitch away from you push to come toward you. After you get proficient at it, you can violate rule #9 with the rest of us!

Hope the info helps!
3D-kid330