i made a helmet skin how do i change my helmet

make sure the skin is in the skins folder, and then go to options - player, and below the person standing you should see the file of a helmet, click on it, and the list will appear, and there you go

And how would i go about naming this file..

Quote from Speed Werx :

And how would i go about naming this file..

It should be named as HEL_yourname.jpg.

Werx, just like car skins to upload and use.