Help needed for writing a descriptive paragraph

I would be grateful if anybody could offer me a list of what I should look at and look for when writing a descriptive paragraph. This descriptive paragraph will be about a person that falls into any of the following categories:

TV addict,  computer expert, baby, world traverler, drug addict, little boy or girl, alcoholic, student, and slob.

Any of these topics would be fine. I desperately need suggestions as how a person in one of these categories would look like and behave.

Thank you for you help!

Think about yourself and write about yourself, then you'll find the best answer!!