Please follow these steps:

Open the Youtube_Button.stl file in your slicer software. Add your name or channel name using the text emboss option in your slicer. Proceed to slice the model. Prepare a mirror with dimensions of 90mm x 120mm, ensuring the mirror thickness is 7mm or less. Alternatively, you can use a mirror sticker of the same dimensions and apply it to the back. Finally, attach the YouTube triangle logo in the center of the mirror. Once these steps are complete, your project will be ready.

Alternatively you can use "Youtube_Button_No_Name.stl" file if you want to play with the font type.