Congratulations! If you see a tall girl with a purple and black Freak 3 wingsuit, feel free to say hi and ask questions. I'm usually there most weekends.
Line twists are usually bad body position. Pull, go back to the basic position and arch so that you are symmetrical. Once the parachute starts to snivel you can put your hands on the risers to stop any twists that might happen during inflation.
Everyone handles stress and adrenaline differently. You have two tandems and one jump in a fairly short time period I am guessing. So, that might have helped with the fear. Instructors also keep you somewhat busy in the plane asking about the ash check, important altitudes, dive flow etc. The talking and rehearsal helps ease the nerves a bit.