Hi Tony and Welcome to the club.
Jaguars don't really get old, It's the drivers who do. I have aged 5 years since I bought my last Jaguar, but Morgana still looks good as new.
Just keep her clean and shine, feed her with premium fuel, and give her a long run once a month, both to show her off and also to regenerate the Diesel Particulate filter.
Then enjoy.
Regafrds
Peter.