Sorry, I don't have any good photos.
There are some rubbish photos of some badly made tea trays in this style at:
Mainly you need copper, hammers, and a torch. It's one of those skills that's simple to teach, but hard to learn. There's a lot of skill to it that comes with practice, rather than being especially complex.
If you're unfamiliar with working non-ferrous metals, then Tim McCreight's "The Complete Metalsmith" is a good read
He's also responsible for the useful "Color on Metal"
which is rather cheaper than the classic "The Colouring, Bronzing and Patination of Metals"
Getting a good Stickley hammered finish is tricky. It needs the right hammer (10 oz mirror-polished ball pein with a very long shaft), the right anvil (1/2" steel plate), the right patina (I now use chemical patina, but those trays were done with peanut oil and heat). Then finish with Garryflex or Roebuck blocks and a coat of Renaissance wax.
For riveted copperwork, I used to use bronze boat nails, but these things cost a fortune and they're hard work to rivet. Now I use cheap copper roofing nails and have much less trouble.