Funny not aging birthday quote t-shirt design

Witty birthday t-shirt design that features a quote that reads "Not aging just upgrading" next to a stamp that reads "Level up". Can be used on t-shirts, hoodies, mugs, posters and any other merchandise. Ready to use on Merch by Amazon, and other print-on-demand platforms like Redbubble, Teespring, Printful and others.