It can be tough to balance what you expect to happen to your body with what actually does happen. Lots of guys can have high expectations for puberty, thinking they'll develop quickly or in a certain way.
The best way to approach your own growth and development is to not assume you'll be a certain way. Look at everyone in your family ?uncles, grandfathers, and even female relatives ?to get an idea of the kinds of options your genes may have in store for you.