It looks like the one Charlie Albone did was a plastic screen (Bunnings) adhered to a mirror. Im not certain what type of mirror he used. You might be able to find large acrylic mirrors through plastic suppliers. These would be suitable outdoors.

I found most of these links by doing google image search. I'm using google chrome browser. Doing a right mouse click on the image will give you this option. https://regencydistribution.com.au/empire-urns-art.html http://www.allposters.com.au/gallery.asp?startat=%2Fgetthumb.asp&txtSearch=Empire+Urn&CID=F5473A24E29745E8A6065502AF545AE5&SSK=Empire+Urn https://regencydistribution.com.au/wall/art/la-facade-loure-set-of-two.html https://www.jamessaid.com.au/wall/art/la-facade-loure-set-of-two.html

Have you already sourced your tiles? I would expect most tile stores could help you find the edging tiles which I think are typically termed 'pencil' tiles for the style you have shown. We used bevelled subway tiles in our DIY ensuite. In hindsight we would have aimed to finish the brick pattern with 1/3 and 2/3 sized tiles (like in your pic 1) rather than full and 1/2 (pic2 and 3) to give a more even edge thickness/profile... Might not suit and we didn't use capping tile (I lost that arguement!) so it is probably more obvious in our bathroom, but just something you might like to consider.

you could look at staining this one>? Bamboo Woven Ply - Bamboo Australia | Sunshine Coast or may I suggest a good detail joiner could make it to your custom panel sizing and finish it suitably for the kitchen splashbacks (if that is what it is for>?) I can suggest someone who would be able to custom make this if you wish.