Every trainer I've flown should have the nose level or a little high on final approach. Use the throttle to control altitude; if you're a little low, add a touch of throttle, if a little high, back off. Pointing the nose down will increase your airspeed, and when you level off that increased airspeed will make your plane climb. When you get to fly a 35-pound warbird you can use some down elevator to lose altitude, but with a lightweight flat-bottom-airfoil trainer, it will get you in trouble.