Get comfortable with downhill speeds. Then start working on your hairpin turns in steep descent. Get a feel for when the bike is about to skip out under from you. One way to get this feel is do hill repeats and come down the same hill and concentrate on improving the smoothness of your entry into the turn, through the turn and exit out of the turn. Practice makes perfect.
Also the technical rider who is leading you down the hill shouldn't drop you
BTW, practicing extreme manurvers on blind corners should be avoided! It can be very dangerous.