Hello Cwebs,
Paint.net
https://www.getpaint.net/ is free and easy to learn. And they have a forum with tutorials for noobs. A search on Google Images for “dial template” or similar will give you examples like:

that you can use Paint.net to modify to your needs.
Your local printshop should have “waterslide decal paper.” Or if you have your own printer then Staples, Walmart, Amazon or Ebay have waterslide.
Regards, Dave.