As stated you can't control fre, but you can work with it, its an element, and part of the earth. Any kind of element or energy you work with can not be controlled but you can manipulate it, which is known as energy manipulation. energy manipulation is the movement of energy flow, you can use to manipulate fire, make it move in any direction like up or down, back or sidways. It takes a lot of practice, but the first thing is first practice meditation and then start working with your energies and chakras.
it sounds abit overambitious to me. If there was people who could control fire they would have been noticed and maybe had a job on a fire station, as brysing said.
and if you only can control small amounts of fire, what can you use it for then?
not sure if this helps but i've done the same thing when making a spy ball i then focused my attention onto this candle while do the same thing and made the flame flicker and burn higher... much higher than the norm...