Mark's "Bertram Shadow" by me

[Alexander]

You, actually, are the only person who does it really well after Mark. But, it needs a bit of practice. The first point you should care about is a getting a break (use the Pinky Count). The second point is that the card you've changed the previous one into has moved a little bit to the side, it should NOT happen. And the third point is that the cleaning up should be as fast as possible. Good luck!