Yes its ok*At the moment you start adding Fire chakra the rasengan explodes and your hand gets burned* O_O
*Quickly throws some water on the hand*
Is your hand okay? o.o
Look, you shouldn't add all the fire chakra in one burst, because it's hard to contain that way. Add little by little, keep controlling all the chakra you add and create a fire rasengan >=]
..He created a normal ransengan then adding bits of fire chakra every few seconds, trying to create a fire rasengan..