I've actually been working on this one off and on for a few weeks, but just got it done last night due to a combination of trial & error, and laziness.
OK, so I had gotten used to my last car having a dead pedal for my left foot. Our Venues sort of have a dead pedal, but it's just molded foam under the carpet. I originally bought a 3D printed pedal
with a velcro back on Etsy, but just placing that on top of the carpet wasn't cutting it. I wanted something that was solid, and not squishy under my foot.
Let's start with the pedal itself. I tried a few different pedals from Amazon, but the one that I ended up going with was this stick-on accent piece made for a Honda CRV.
It's just a thin piece of steel or aluminum, with some adhesive on the back. I took all that adhesive off, and sprayed it with a few coats of rust oleum black matte paint.

Inside the Venue....If you pull back the carpet and foam, you'll find there's a sort of pedal "frame" that's mounted to the floor by 3 bolts. That's what's covered by foam and carpet to create the thing your left foot sits on now. I used this as the base that I would mount my pedal to.
I drilled some holes and added threaded inserts so that I could screw the pedal into it:

(There are 6 inserts in my picture, but I only used 4. The others were there as part of the trial and error process I went through with different pedals)
Now - to give this a solid feel to it:
I had some aluminum bars from Home Depot that were leftover from the amp install documented earlier in this thread. I cut those and drilled holes so they could be screwed into the pedal base.
Then I added smaller threaded inserts to the aluminum bars so the actual pedal could screw into that:

Now that it was all lined up, I took the bars off the pedal base and installed it back into the car. Then put the foam back over the base, and screwed the bars down through the foam.
So from the bottom to top it went: Pedal->Foam->Bars.
Here's what you'd see if you pull up my carpet....Not pretty, but no one will ever see it:

Since the pedal I bought in Amazon was pretty thin metal, I figured why not reinforce it a bit?
So here are some more aluminum bars JB Welded to the underside:

All the pieces are ready, and the only thing left is to screw this pedal down. I did this after I was sure that everything was in place and lined up correctly, because I didn't want to screw through the carpet until I knew everything was exactly right.
End result:
