installing carpet for the first time, 70 cuda.

I have never installed carpet before. Read some old posts on cuda/challenger and I am sure there have been multiple posts on this topic. Installing ECS carpet, car has a 4 speed. working on the front. I have been triming the edge against the cowl a little at a time. My main question is what is the correct way to fit the carpet around the high beam switch and gas pedal? Pictures would be great as always. Thanks.

...factory photos 70 E body (Challenger) they just "hogged" a hole for the dimmer

This carpet was carefully cut from a 36K mile original carpet to make a perfect template

Thx. for the pics, that's exactly what I needed.