Please Use This:
In Event "Step" And Action "Transform Sprite" (angle=direction)
This Makes The Owl Facing Where It Is Going.

Also Under Your Controller Object In Room 5 (Level3) Use This:
In Event "Other/Game End" And Action "MessageBox" ("Good Job!!!") And Action "Goto Main Room"

Other Than That Very Good! Great Idea However You Have A Long Way To Go With GM!!!

Not bad. The only problems I have with it are that each time you die, it goes to the main menu screen(you can easily fix this with room_restart;) and on the last level, getting the trophy will cause it to crash, as there is no room after it.

Quite short and dificut ;-)