I like you smooth-control a lot more then what i did.
Thing is. It is a very good example. You can expect people to download it and try to do the same. Making you the Teacher.
But they will bump (when they are a beginner like i am). It will not work with 40 items in the list.
And none will share your enthusiasm to precisely handcraft 40 imagepoints.
So, i was thinking. Lets automate this.
https://www.dropbox.com/s/gu63jq5ur936h ... .capx?dl=0
That is all you work, with just another handbrake. I also optimized some cpu. Its no problem to add items to list during runtime too.
Hope i help some.