Do you want to create your own hat?

yes

引用自 Skull Trooper：

yes

The wiki has not been completed yet, but I can give you an example.

It should be an ordinary hat, or a protective helmet?

ordianry, i jsut want like a TF2 hat

引用自 Skull Trooper：

ordianry, i jsut want like a TF2 hat

Example:
https://pastebin.com/nrMrkxgC

引用自 Skull Trooper：

ordianry, i jsut want like a TF2 hat

Create a file with the original name in the "autorun" folder, and paste the code there.

After that, just change the parameters. It is advisable to configure in window mode to quickly switch between the code window and the game window, to see the changes.