Hi, guys, i am working on a uni project about building an application for smart phones right now, and i am responsible for interface design. I do not have much intuition on design really. So could someone please tell me how to start it and what tools i could use to help me. I have seen he iphone interface and it is great, how did they do it? for example, how can i make the button look like theirs. if i can get it look something like at, it will be great.

Any suggestion is greatly appreciated.