How to make a huge 3D LED sign board for less than 10$

I am moving to a new workshop very soon and the last few days I am working very hard to finish renovating my new workshop. In honor of the transition, I decided to make myself a huge 2-meter-long, three-foot-high sign with LED lighting. Preparation is very simple but requires great precision and patience. The cost of materials is less than 10$. Grab the video and tell me in the comments what you think.

https://www.youtube.com/watch?v=jR-_FoYh-GA