To be more exact, on the frame display, I used pink panther sheet foam insulation that's about 3/4 inch thick, then spray painted it before covering it with the burlap. I stand it up with the help of a heavy fireplace screen (it isn't trifold, it stands up on it's own feet) that I wire the frame to. Below is a link to a picture of my craft fair booth on pinterest which shows the frame.
https://pinterest.com/pin/221239400416837134/If the link doesn't work, and you want to see it, just go to pinterest and look up user Heidi Beatty, then look for the board "jewelry I made". It's the first pin on that board. If THAT doesn't work, email me, and I will forward you the pic.
Angela, I don't think it dwarfs the busts at all, rather makes a backdrop for them. I have some pretty tall busts for long necklaces, but even if I didn't, like I said, it's more of a backdrop. More attractive than looking at the tent back anyway!