In a mason jar add glue, dish soap, and enough food coloring to achieve your desired color. I used plastic cutlery to stir this mixture well.
Allow the mixture to thicken for a couple minutes and then begin to paint your designs, either freehand or you could draw your designs before to make it a little easier.
Make sure your clings are not too thin, or they won't stick, add another layer of mixture if needed.
Let dry overnight, and stick them to your windows. If they lose their stickiness you can add a little warm water to the backs.
Recipe by The Domestic Geek Blog at https://www.thedomesticgeekblog.com/diy-window-clings/