Funny fantasy dragon and knight t-shirt design

Look at this funny t-shirt design of a knight with a hungry dragon on his back and the quote 'Do not meddle in the affairs of dragons for you are good with ketchup. Can be used on t-shirts, hoodies, and any other merchandise. Ready to use on Merch by Amazon, and other print-on-demand platforms like Redbubble, Teespring, Printful and others.