Best places to mount switches

I just posted this about an hour ago in another thread. This is what I made for my kid's TJ, switchplate from amazon, a piece of aluminum plate as backer, and a couple of wedges cut from plastic (like cutting board material)

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I have a 1998 Sport with the 2.5L engine (thanks for all the help when I was doing the engine swap btw). Here is what I have so far for my electrical
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I have 2 Daystar switches for lights and a USB charger for my phone as I always seem to lose my cigarette outlet charger (my family likes to steal them). My two aux switches run to my lights upfront.View attachment 171677
I would like some extra spots to add some switches so I figured this would be the best place to ask!

How did u cut in the square hole?