Great start!

Three things:

- horizontal (long) direction is the opposite of vertical (short) direction. That is, a vertical tilt does the opposite of a horizontal tilt; it is a "bubble" vertically, but a "weight" horizontally. I think it should be a weight ("fall" down) in both directions.

-Screen blanking! Argh!

- The accelerometer point should be a repeller, not an attractor. This would be more like sheep herding. You can still create attractors by touching the screen, but the floating point should be a sheepdog, that is, a repeller.