"Likey"? What are you, 12?
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I focus chakra, which by this time would naturally be fire chakra in the pit of my stomach ready to perform said jutsu. When I feel like a fire is roasting in my belly, literally or not I try to perform a subtle regurgitating action in order to gain the flames out from within myself ready to use them in such an offensive manner. I coat the insides of my throat and mouth with chakra to make sure I don't accidentally burn my respiratory system. Once I feel ready, I bring the fire higher up through my body, making sure to add pressure to it so it will travel further up to a mid range distance. In doing so, the pressure buids up, which means I have to let loose or lose control of what I have going for me, so I do just that. Releasing the flames, I make sure to be careful with how I go about it, making sure to manipulate it's shape to end up in a stream of fire; similar to a flamethrower to travel from myself to my desired location, which just happens to be you. Seeing as it's a stream, I have to feed a continuous flow of chakra to keep it going, halting my actions would cease the technique.
Miiiiight wanna avoid that, senpai~