Got my first ever personal plate today, a little bit excited. Thought it would be a nice 15 minute job, but it turns out the "professional" who fitted the last one missed the school class on symmetry, so I had to faff about measuring not just marking and drilling. Anywho, got there in the end. Quite pleased, I think it takes years off the car to the untrained eye.
Measure it thrice and it'll look, errr, ok.