1) Remove existing hood liner.  You need to pull the plastic plugs and then the liner lifts off clips at the bottom of the hood underside.  I used a door removal tool to pull the plugs.  It looks like a bent screw driver with a V at the end and should be available at your local parts store.

2) Fold the CarMotorsports liner in half and lay on top of the factory liner.  Spray the provided glue on the exposed sides and give a few minutes to dry.

3) Press the CarMotorsports liner into every groove of the factory liner.  The CarMotorsports liner will stretch.

4) Cut the CarMotorsports liner so it is a few inches larger than the factory liner.  Then spray glue on the extra edges of the CarMotorsports liner and a few inches of the back side of the factory liner.  Then wrap the CarMotorsports liner around the back of the factory liner.  To get the holes made in the liner get a soldering iron and go from the back-side of the factory liner and press the hot tip through the CarMotorsports liner.  It melts the CarMotorsports liner, but doesn't seem to do anything to the factory one.  Watch out for the fumes though.

5) Finally install the liner back on the hood.  CarMotorsports does provide new plastic clips.  I reused the factory ones.  Be sure to get the bottom of the liner in the hood clips.