1) Using an adhesive like Loctite quick-bonding epoxy onto the metal pedal
2) Drilling a couple of holes straight into the metal pedal
3) Drilling a couple of holes into the rubber pad and attaching on it
Decided on method 2 as it will look the best and would be a shame if I couldn't remove it later in the future should I change car or pedals in the future.
Fitting the pedal cover to the accelerator was straight forward as there were existing holes. The Dead pedal was slightly more complicated as I had to drill in 3 holes into the plastic dead pedal itself and I had to measure it well so that I could lock in the nuts behind.
Complication started with the solid metal pedals of the Brake and Clutch. As I didn't remove the pedal stalks, it will always be a challenge to get some traction from the drill to the pedal itself. As the photo below suggest, I stuck on a couple of stickers and used Bluetack to trace where the screw holes should be. Managed to only drill in 1 hole per pedal as oppose to the ideal 2 cos I couldn't get the drill bit secure in place without flaying around. Nonetheless, managed to lock in the nuts behind and it's pretty secure. Will try to drill the other holes another time, but for now I'm pretty stoked that it looks really nice


Dead pedal and corresponding SE pedal cover

Fits nicely over the boring plastic dead pedal

Stickers in place with the markings to drill in the holes.

Not a very good photo due to bad lighting in the garage. Looks much better in real life