Shoot your Princess Leia bird directly towards the top. You want it to go as high as possible so that you can a clear line of path towards the big rock all the way in the back. This shot will take multiple tries before your pull is exact to be able to kill both of the black pigs.
Power Activation Point
Tap for your grabbing power at the top of your trajectory. Your pull must avoid the flying pig.
First Shot Result
The big boulder destroys both of the flying black pig. The rocks then crash the metal vehicle thing, destroying the rest of the pigs and leaving you with the three star master award.