Some breakfalls are scarier than others and, for many people, 'high breakfalls' - when someone sweeps your feet from under you or throws you into the mat without giving you the chance to do a normal backward or forward breakfall - are the scariest of all!
I just discovered this rather good example of how to work your way up from very simple rolling falls to very dramatic whizzing-through-the-air breakfalls. I shall be introducing a few of these exercises into our Aikido classes here in North Devon soon so my students may want to study this video closely. In the meantime, I hope it goes without saying that, without proper instruction, you should not even attempt these. So, for the time being, watch but don't do!