Do this:

after pointing the plane up:

1. you'll have to keep tapping the elev. up - little bit at a time to keep the nose attitude pointing up.
2. at the same time burping the throttle to keep the plane from falling, or climbing
3. kicking the rudder to keep the nose straight...when the plane's belly is toward you...add rudder to lower wing to keep the plane straight.
4. most importantly is to make small adjustments, constantly...think of your elev, and rudder control as if you have gyros hooked to them. Don't forget to get the throttle going also. Don't expect to set the throttle at one place and the plane would stay there...you'll have to massage it to keep it there.
5. I know this sound like tapping your head, while rubbing your belling kind of act but practice, practice, practice...I got it in one night...so can you!