Place them close together in a grouping on the counter. This helps the jars to cool more slowly - which also helps combat the "wet spots."
Slowly pour the wax into the jars. Be careful not to overfill them - and be sure to leave a little extra wax in case you need to do a second pour. (This will depend on your wax and temperatures.)
After pouring, make sure that all of your wicks are well centered.
Some candle makers put the candles in a shoe box (or the box the jars came in) to cool. (This works fine, but sometimes the wick bars can get in the way.)
