How to Model Al-Khor stadium in Sketchup

This video illustrate how to model Al-Khor stadium qatar BY SketchUp
--------------------------------------------------
Download Plugins:
1- Shape Bender
http://extensions.sketchup.com/en/con...
2- Wire Tool (note this plugin works on Sketchup 2013 only)
http://extensions.sketchup.com/en/con...
3- Soap skin Bubble
http://extensions.sketchup.com/en/con...
4- Curviloft
http://sketchucation.com/pluginstore?...
5- Libfredo6
http://extensions.sketchup.com/en/con...
6- Joint Push Pull
http://sketchucation.com/pluginstore?...
7- Fredoscale
https://extensions.sketchup.com/en/co...
8- BezierSpline
http://sketchucation.com/pluginstore?...
--------------
you can download this model from 3D warehouse
https://3dwarehouse.sketchup.com/mode...