How to set up an OpenVPN Tap Bridge between two OpenWrt routers

I've just uploaded a complete guide how to set up an OpenVPN Tap Bridge between two OpenWRT routers. Diagram below to show what I guide you through setting up.

It took lots of researching to gather the correct information, I never found an easy all in one place guide and found a few troublesome bits to overcome. If anyone has the time to follow it and provide feedback that would be great.

Complete Video Guide how to