I think the only way to take off the plastic headlight cover is the following: If you look on top of the cover, there are some clips that hold the cover to the car. I think if you take those off, you can get the plastic cover off. I am not 100% sure so don't take my word on it. Anyways, hope this helps.
Sim Garcha
1991 Acura Legend LS
Sim Garcha
1991 Acura Legend LS