It worked! I made these totally cute candles using my empty soup cans and old ugly candles. They ended up with a dip in the center though, not sure why, but it doesn't really bother me.
I made a double broiler by sticking the soup can in some boiling water, then chopped up old candles and stuck them in the can and watched them melt.
I stuck a wick through a cut out piece of paper (so it wouldn't flop over) and stuck it in the melted wax to harden
and voila!