When dealing with such volatile products you should always have some other people around in case you catch fire. It would be best to have someone standing by with a bucket of water. You should also keep a damp rag in your pocket in case you drip some of the paraffin. On that note always use 99.9% pure paraffin, other oils/fuels are generally carcinogenic in nature and could be harmful if ingested.
My comrades Marcus and Willy were present to watch.
More fire to come...
Fire Jutsu is exciting but dangerous.