You could just stain it gray so it looks aged!!
You can also make an oxidizing stain, creating it with steel wool and vinegar. Shades of gray help, too. Good luck and stay safe.
wow that is amazing !, thank you very much I will put it into practice, greetings
You could try steel wool and vinegar or some of these other options: https://www.familyhandyman.com/list/how-to-age-wood/
You could paint it and then sand the edges that would naturally age with time
Hi Laura: Here are some sites that should help:
Here's some ideas
Look up faux paint finishing, how to age wood if you want to go the paint route.