This is a bit rushed and has a few mistakes, but I think it gets my idea across.
In this, I imagine it being on PC (or 3DS) and one screen is active at a time. You tap the pink button to bring up the pink chalk item you got earlier, and draw a path between pink areas. You only have so much chalk, so you can’t just draw everywhere (it resets if you hit the pink button again). Then you switch to the upper screen and walk the other character across the bridge.
I definitely need more practice making more complex animated stuff, but it was fun! I hope it’s not too confusing-looking or muddled.