Steps:
1. Carefully detach rear side of headliner (or easiest side of headliner to detach) in order to reach your arm inside of it to spray the adhesive 6 inches from target area.
2. Start furthest from you and spray a small section into the area you want to start with.
3. Brush over a small section of the headliner toward the general center of the headliner with light pressure.
4. Continue this process until you have completed the entire roof section-by-section.