The real way we know you're young is because you didn't know how to get the flames on the sides of his helmet. I will explain:
This is the modern flame piece that you are familiar with. You can't attach this to his helmet.
In the past, Lego made flame pieces like this. Notice the two tiny pins on the base of the flame. Those two pins fit into the sockets on the sides of the Dragon Masters helmet that Warhead usually wears. This is also required to make fire rings, which are useful for some of the more advanced rules.
Hehe. I feel old now.