Diffuculty With Ice

I don't believe you can do that with the power of your mind.

thats imposible

Maybe ice isn't your certain element. Besides, I don't think you can actually 'form' it. The most you can do is manipulate it, is what I've picked up. All you need to do is relax your body and focus on one part of your body with the most energy, and put that energy into the ice and see what happens. :P