So, you're landing it on an inside edge on the left foot?
I've never seen that one before. People tend to take a toe loop and turn it into a three turn-toe-waltz jump but you need to think about bringing your right leg through so you have something to land on. Work on a back outside pivot (like in ISI Freestyle 3). In the toe loop, you should go through the position of a short back outside pivot, bring the right leg through and jump. Don't forget the left leg. It makes a motion very similar to the landing (and landing only) of the waltz jump. Without seeing what you're actually doing, that would be my advice.