Of course I did it the complicated way but I did discover a way to make it if the candle actually fits into the mug :)
I bought a candle because I couldn't find the wicks and I had to melt it in another mug to make it small enough to fit the ceramic cup. After microwaving it a few seconds at a time I then used tongs to lift the wick and candle out and into the other cup. I poured the rest of the wax in the cup and let it cool. It made a mess (that I'm still cleaning up) but it made an awesome owl candle. I'd advise you if you want to make something like this, measure the size of the cup first!