I just finished another project in my pergola with a Merbau timber screen and a matrix for decoration to cover my colourbond fence. I also attached leaf screens to each side to finish it off. Thank you @diy_hausdesigns for the idea.
I used the Whites screen up to attach it to my existing posts which made it very easy to install with the spacers. I also attached one Merbau timber decking panel behind to support the screen panels from warping.
I wasn’t sure whether to attach the matrix and then add more screws to the panels so I have sat it the planter box infront.

Merbau timber decking panels 90mmx19mm

Leaf screen attached to the posts

finished to the top of the fence

Matrix screen sitting infront

Finished Project