HARMONIC SHARK PATTEREN ON US30

HERE IS A BEARISH SHARK HARMONIC PATTERN.
YOUR SUPPOSE TO WAIT FOR THE PATTEREN TO COMPLETE BY IT REACHING THE D POINT TO THEN SELL AT THE D POINT BUT I LIKE BUY AT THE C LEG AND TAKE PROFIT ON THE D LEG TO THEN SELL ON THE D LEG WHICH IS THE COMPLETION OF THE PATTERN