Professional prints

You can.

Most printing services let you upload photos directly from iPad or iPhone to them for printing.

For example Walgreens and CVS who both have photo printing services, let you do so. You go to their website and choose photo printing, then follow their prompts easily and upload the photos from your photo app to them directly. They may likely have app you can download as well.

I checked and the Walgreens app does do this: ‎Walgreens on the App Store

This is a User's Apple Watch Forum. There is a forum for the iPad, I suggest you repost it there.

My mistake, I am on the wrong Forum. My apologies.

Go online and find a printing service or company or, better yet, check with a local business to see about what they require in order to print them.