welcome aboard to both of you!!
Cubee, what year is your car? Some years, there is a spring loaded clip that holds your corner lens in and some are screwed in.
just like mattymac has mentioned, there is a small oval shape hole that you will need to put your screw driver in. on his, he's got the spring clip that you just push down on it. on my car, there is a screw that you loosen to get the lens out. just use a phillip screwdriver. if i knew what year your car is, then i can be able to determine which way you will need to do.