Aim at the first ice block. Your goal is to enter at a little angle.
Power Activation Point
Activate the jedi telekinesis power to push the single small wooden block on the edge. The wooden block must miss the center piggy. Your goal is to break the iceblock to the far right.
First Shot Result
When that iceblock is broken. The purple ball will fall, crushing all the piggies in its path. It should be noted that the ball will have to crush a decent amount of blocks for you to get the three star mastery in this stage.