I did the floating shifter about 9 months ago, and this new tray motivated me to dive back in to give it a more finished look. It took me less than an hour the first time so I thought this would be similarly quick. Sadly I was mistaken, and I was swearing the in garage for over 2 hours

mostly due to the repeat measuring, cutting, and struggling to fit the tray beneath the shifter mechanism without taking apart half the console again.
There are clips beneath the outer lip of the tray that are supposed to click into tabs inside the felt liner that didn't line up for me. The passenger side tab was about 2mm out of alignment no matter what I tried, and therefore left a noticeable gap between the tray and liner on that side. Fortunately, bolting down the five M6 bolts under the rubber tray liner did help shrink the gap to half what it was and it's now more acceptable.
I decided to use some silver brake caliper enamel on the "mustache" plate instead of polishing, and it's a close enough match to the rest of the linkages. I prefer a shift boot to the gaping hole that others here have done, so I just replaced mine with an alcantara+ grey stitching version to match my custom steering wheel. Thanks for those here who provided helpful instructions! Some low quality, poorly lit photos attached.