I just remembered this building trick for custom fences as I was building a library! I don't know where I learned it and how it I remembered it out of nowhere but I'm so excited to show you! Basically the steps are:
Build a foundation
Place floors on the side you want your top fence on
Build the lower fence on the ground
Build the top fence on the floor
Remove the floor and foundation
And there you go! It doesn't work with all fences but if you have enough low and shrub fences you can definitely come up with a few options.












