I'm finally doing it! 
I am wondering, is there anything I should use to better adhere the paint to the plastic of my side skirts and door moldings? Or is just sanding, then primer, paint, then clear the best method?
And also, the door moldings for my 99 sedan are held on by clips behind the door panels correct?

I am wondering, is there anything I should use to better adhere the paint to the plastic of my side skirts and door moldings? Or is just sanding, then primer, paint, then clear the best method?
And also, the door moldings for my 99 sedan are held on by clips behind the door panels correct?