There's no one "correct" way to write a hub other than to get a decent score it should be at least 800 words long spread among several text capsules, include at least one image related to the topic (and if a photo, preferably taken by you). Adding a poll capsule, a video relevant to the topic, and a map if appropriate will help the score, but none of these are absolutely necessary. Also, the hub should have no grammar or spelling errors and should NEVER EVER be written all in caps.
I suggest you spend an hour or two reading the Hubpages Help pages (next to "my profile" at the top right of this page) as well as answers to this question in the forums. Good luck!