By a step further, I mean more like the concept of the ability. Defining how it works can open up new possibilities with the power. What exactly is his metal form? Does he shape it to his body? can he shape the metal? Define organic metal. You know, iron it out. Just try to make things as grounded as possible (or at least as grounded as it gets with superpowers). Campy isn't a word I would use to define this rp.
As for speed and flying I stand by my no at the moment. any abilities that you have, should be related to your power.