That sounds like a really fun idea. I took a look at some pictures and it then I ran across this article. I hope it helps you!
Here's a good tutorial for you: https://www.youtube.com/watch?v=H9ZrOqU39Z8
This should help: https://www.hometalk.com/8974297/repurposed-tin-cans-to-the-wizard-of-oz-s-tin-man-his-girlfriend-the-tin-lady
Here is a fun tutorial: https://worththewhisk.com/2009/09/24/how-to-make-a-tin-can-man/
Here is a cute tutorial to help you
There's several posts for some here:
Here is a video tutorial for you: https://www.youtube.com/watch?v=H9ZrOqU39Z8
Figure out how big you want it on a table then you will need one large can for the head 4 cand same size for each arm and 2 cand one size smaller for the hands.then 1 larger can for the body bigger then the head .and then 6 cans for each leg .3 buttons a silver funnel strong wire a hammer and a large nail and maybe 5 more large buttons to hold on the head legs arms assemble the arms and legs at the bottom of the legs put the cans long ways for the feet .punch holes in all cans one at a time and line them up so you could see which one goes at the end bacause that one has To go backwards to hold them then put the wire through and use button to hold the cans on.