jusplainwacky

I'm rebuilding my hardtop and I'm trying to figure out at what point do you put in the headliner?
Right now I have my frame together with the rain gutters and the skin (top) has been painted and is off the frame....and so is the front aluminum header. I have no weather stripping on the frame at this point.
Also, is it better to put the aluminum header on the skin and then put it on the frame, or put the aluminun header on the frame and then the skin?
Any suggestions on the steps of putting it back together are welcome.
Thanks!