increase curtain folding depth

[haashem]

thanks for developing this great framework.

I want to add more depth to curtain folds and change position of top and bottom of curtain to keep on with pan more.

I want to mimic like this video:
https://vine.co/v/Mh5qd0HEpnt

<iframe src="https://vine.co/v/Mh5qd0HEpnt/embed/simple" width="480" height="480" frameborder="0"></iframe><script src="https://platform.vine.co/static/scripts/embed.js"></script>

how can I achieve?

thanks