Yeah, you probably just missed the 2 screws hidden under the cup holder. Also, to remove the shift handle there is a little U shaped retainer to pull out.
Not sure about the Camaro but it is probably similar to the Firebird. On the Firebird the U retainer is on the front of the handle, you can't really see it until you turn the key on and shift into 1st. It just prys out using a small screwdriver or needle-nosed pliers.