The second type: stand well first and put your feet in the shape of the picture. After that, open your feet (keep the posture of the inner eight), open to a certain extent, and retract the outer eight inward. The trajectory is a bit like drawing an ellipse.
There is no difference between turning and forward sliding, and it will be natural if you are proficient in backward sliding. It's like turning when you're skilled at sliding forward.
I don't know. You can ask again. Thanks for the adoption.