ok so i just got this game 1 month ago but i dont know how to get template skins for cars, can someone help me? thanks.

There's a whole section on the forum on car skins - https://www.lfs.net/forum/29-Car-Skins

Especially the "Threads in Skin help/tools/templates" section.

You'll want the wire kits.

Edit - and I forgot about Master Skinnerz - http://www.barkingpig.org/msz/