Dortmund Slider

Was watching Dortmund's game Saturday morning and pieced this slider concept together. It's far from perfect and honestly needs quite a bit more work, but I was happy with the quick slapping concept - and also a scrappy win by Dortmund.

Notes:
1. Auto tracing masks in After Effects is still terrible even with geometric shapes, would redo them by hand next time.
2. Masking multiple images to create a stacked effect and getting the opacity right is very difficult I staggered the opacity of the mask but it's still noticeable if you pay attention - would try to mask the text instead of the images next time.
3. Tried building this in Principle - most "animation" prototyping tools still lack any strong animation capabilities if you need to mask, or manipulate multiple elements past very basic color, shapes you best just use After Effects.
4. After effects really needs to introduce some more layout tools - a distance measurement and better rulers would make life much easier.