This is a very hard stage to pull off the three star. For the first shot, you will have to push the bomb all the way to the right, kill the green armor jedi, and kill the pigs hiding on the left part. The aim and the timing of your power use has to be precise.
Power Activation Point
Tap the power when you can push both the bomb and the hanging pig. This power tap is very important to be precise.
First Shot Result
You will earn the three star mastery once all the pigs are dead. Again this is a very hard stage that requires multiple tries.