I took BigJim36's design and modded it to my needs. I've added a tab which not only adds a screw hole to mount it cleanly but adds a way to cable tie to the wires out of the way. I also moved holes to where I need them.

I've have added new piece to put the wemos d1 mini I used for the controller. The wemos friction fits on the inside.

I used 27 leds per panel (60leds per meter), you can probably fit 28 in each panel but I wanted 11 panels. A 5m strip had 3 leds left over.

Using a 5v 20amp power supply which I created a cover for here: https://makerworld.com/de/models/106237
and brackets here: https://makerworld.com/en/models/106213 

The code I used was from here: https://github.com/NimmLor/esp8266-nanoleaf-webserver

These are very helpful when wiring: https://www.amazon.co.uk/SRunDe-Connector-Controller-Adapter-WS2812B/dp/B08TLZBCLC/

LEDs used: https://www.ebay.co.uk/itm/124295445848

Power supply used: S-100-5 

Arduino: https://www.aliexpress.com/item/32787418018.html?spm=a2g0o.productlist.0.0.7bb77acb9NfFmk&algo_pvid=0260fe1c-12da-4f39-a462-eb1adf2aa723&algo_exp_id=0260fe1c-12da-4f39-a462-eb1adf2aa723-3

PLA used was Sunlu Black PLA+ and White PLA+

Edit: I've since used WLEDon other projects and it's a lot easier to set up (can be installed from a chrome based browser) and has more customisation for the leds. It has an app on android (probably iphone too). I would recommend using that rather than the one listed above: https://install.wled.me/