Need some help with interior
 

So im planing on doing the "diamond- tufting style" for headliner in my '85 sierra and i need some help. i have never done anything upholstery related before and im guessing that the diamond tufting is gunna be pretty tough.
so... if any body has done it before, could you show me? maybe send some pictures or walk me through it.

Thanks!

This is wat im lookin to do, except blue vinyl.