Drop knee turn

Dear longboarders!
I am getting into drop-knee turns, after trying and failing occasionally I gave it a good shot last session. I am regular footed, and usually ride from the middle of the board. I drop my left leg which is great for the cutback but after the board has turned back I am at a loss of what to do; I did it a couple of times and simply brought my left leg back forward, and leaned forwards digging the right rail shortly before falling off.
After doing a drop knee cutback, where should I put my feet to turn back into trim? I have a feeling that I need to move my right leg back, but that would completely throw my balance!
Any advice would be greatly appreciated.
I am getting into drop-knee turns, after trying and failing occasionally I gave it a good shot last session. I am regular footed, and usually ride from the middle of the board. I drop my left leg which is great for the cutback but after the board has turned back I am at a loss of what to do; I did it a couple of times and simply brought my left leg back forward, and leaned forwards digging the right rail shortly before falling off.
After doing a drop knee cutback, where should I put my feet to turn back into trim? I have a feeling that I need to move my right leg back, but that would completely throw my balance!
Any advice would be greatly appreciated.