How do you beat super stacker 2 level 18

First You Have To Stack All The Purple Blocks (Squares) In The Center Then You Will Have To Take The Tall Silver Beams (Recktangles) And Pute Them On Top Of The Smileys But On The Side Thats Closest To The Purble Blocks (Squares) So That They Will Fall Towards Your Tower So Once You Have All You Silver Beams (Recktangles) On Top Of The Smileys And They Lean Toward Your Tower They Shall Stay There And Be Balanced! Hope That Helps!