In general, you will need to submit an application form, pay a fee, and choose a personalized license plate number or combination of letters and numbers that is not already in use. Some jurisdictions may have restrictions on the characters or combinations that are allowed on personalized plates.
It's important to note that personalized plates are often subject to additional fees compared to standard license plates, and they may also require annual renewal fees. Some jurisdictions may also require you to surrender your existing license plates when switching to personalized plates.