Always bothered me that charting options in Keynote and PowerPoint were so limited (and dated). But by adding a few simple masking layers, one can radically improve the way charts look and behave.
You don’t have to be a Keynote Ninja to figure it out - just a bit of patience.
There is no limit to the types of clever masks one might create and the interesting charts and animations that can be developed using this simple trick.
All the files you need to get started are here. Have fun. Just deconstruct my file, tinker a bit, and you’ll be off and running. If you get stuck, just message me.
Will add more detailed instructions on creating masks using Sketch App in coming days.