Here's a step-by-step process to making a sheet metal handle (out of copper or tinplate or even stainless sheet) for anything from a cup/mug to a coffee or tea pot. It's pretty universal - you just need to adjust the length for the most part.
To sign up for an in-person workshop in Wisconsin (spaces are limited!):
https://house-copper-cookware.myshopify.com/collections/coppersmithing-workshop-series
Find me on Facebook: https://www.facebook.com/housecoppercookware
And Instagram: https://www.instagram.com/housecopper
Or find me on the web (and shop!) at:
https://housecopper.com/
For information on my books, check out:
https://www.saradahmen.com/