Installing sunvisors with new headliner???

[Back N Black]

I need to install my sunvisors and the new headliner is nice and tight. How do i puncture the headliner without causing it to tear when installing the screws?  

[tan top]

 for all that type of hardware in the headliner & carpets , i used a soldering iron with small tip 

[Belgium R/T -68]

I installed the screws before the headliner.

Per

[vancamp]

for all that type of hardware in the headliner & carpets , i used a soldering iron with small tip 

x2 you can use a ice pick to find the holes and use the soldering iron with a pointed tip to seal the hole as it goes thru.

[AKcharger]

That's what I did