No problem..

IF you can't tell your arm is bent, and goes into the pot from the top. Do not cut a hole into the pot. The leaves on the puppet will hide the bend and the hole in the shirt. 

I used wire in the fake hand, so it would look really real.  The wire enabled me to pose the hand. It was then attached to the pot. The pot is plastic and I found it at target for like 4 dollars.

I wish I could give you specs on the arm. But since everyones limbs are different sizes and builds I can't. My arm would not work for everyone as I'm 6'3" with a 37" sleeve.  I will tell you this though if you use some 1/2" foam it will build a nice arm and then stuff it with some poly fill. Not to much though, cause then it will be heavy.

The pot should be held up completely with the strap around the body. You're only concern should be the puppet when you are actually walking around.

Any more questions?

I know this thread is a bit old now, but I just stumbled on it and LOVE the video!!

Great work!

Very COOL!  Thanks for the link to the video (s)...Cool to see how BIG puppets work.

Thanks for sharing

Dennis