I wish I had the talent to make my own custom desk! But I'm useless with tools. I'm quite good at "recycling" things though.
My "desk" is a very simple computer desk I bought on Amazon. The keyboard drawer is a perfect fit for my small 49 notes controller.
Behind that desk is a large dresser, which I use for extra space, to put the iMac, the audio interface, etc. I used to use blocks of concrete on the dresser to elevate my monitors, but I eventually bought a pair of stands.
For each corner in the back, I recycled a pair of nightstands to put the secondary monitors.
I even recycled a pair of black pillow shams to cover up the nightstands!
Doesn't beat custom built furniture, but I love my setup.