If it melts all the wax on the side half wax down it will put it out, especially as the wick is trimmed every couple of hours... you need to, in my opinion, heat the wax to a higher temperature and combine a softer melt point wax in, cure for at least 4 days, it needs to cure somewhere with little fluctuation in temp. Each day if you smell it, it will smell a bit different as the fragrances "mature" in the wax. Consider trialling multiple different brands / types of wick as different fragrances will react differently to the wick. The wick ought to be just under 1cm for the first burn, it can be shorter as it melts down, you could even slightly off centre the wick and make a small cut in the coating towards the centre to control the curl of the wick towards the middle... but that's optional and a bit techy... hope it helps
