I want to create a texture pack, How do I do it??? I want a texture

Here's how to do it:

1. get the default texture pack: https://static.classicube.net/default.zip
2. extract the zip file, open the folder and then edit terrain.png or any mob texture via image editing programs (like Paint.NET or GIMP).
3. once you are done with that, zip the folder and drag it to the texturepacks folder (where ClassiCube.exe exists.)
4. then, to test it, go to Singleplayer and upload the file (if your on webclient) OR click on the zip (if you are on client).

Please keep in mind that if you plan on adding it for your server, you may or may not get positive feedback on your server for the texture pack.