My DIY CNC milling machine project - stated installing the electronics. All fine so far 
Stepper and controller power OK
Next I’ll wire the drivers and steppers for a test setup.
Figure how to connect the VFD using serial
Very clean layout. What controller are you using?
@Freeman_Pascal cohesion 3D Remix (Smoothieware based). More wires before it is ready, but I hope to keep it clean.
I recommend a big red button wired to the kill button header for E STOP.
@raykholo I plan that :–)