Re. the 2 levels - I would have loved to have seen them at an angle so that the divider between them was more obvious as a difference in floor levels. I found it a bit disorientating & initially took it for 2 shots stuck together.
You got this one right to a tee. Superb movement, hit the exposure dead on for the amount of subject movement. Its also nice that the group of movers on the right is more colourfully dressed than the others on the left.