hecate-athena
Element control must describe the character that uses that element to a tee. All fire-wielders must be tempermental, have red hair, and hate the cold. All healers must be gentle, kind, and knowledgable. Heaven forbid you have a loud, obnocious healer.
And all water wielders must be very moody, what with how the sea can change and all; storms, hurricanes, tidal waves etc.
Oh and there must always be the cliche "Fire always beats ice" phrase thrown in between a duel of elementalists, of whom, the fire elementalist wins simply because he is fire, no matter how outclassed he is with skill level when it comes to ice, even though ice melts and becomes water which puts out fire... ice also makes anything flammable into something inflammable, so either way fire still beats ice.