DIY Easter window box interchangeable sign, Make your own interchangeable decor

This easter inspired window box insert is an amazing craft.
This religious window box insert comes with the cross insert and the He is risen plate.
The cross insert - 10.1x7.1 inches.
He is risen insert - 9x2.85 inches.
Made with great quality birch wood.
Window box can be found here -
https://laseronthehill.etsy.com/listing/4467214386
https://laseronthehill.etsy.com/listing/4471870050
I cannot guarantee these inserts will fit in window boxes from other sellers. Because everyone sells different wood that may come in different widths.
All of the wood used in this project is 1/8 inch thick.