First pages are hard. Here's a checklist for you.

A first line that ends with a punch.

A first paragraph that hooks the reader.

A person, group of people, or personified object. (You can even make a place a character too.)

A color tied to the theme.

An image.

Markers for the genre you're writing in.

A hint or outright statement of time/place.

Good dialogue.

A want or problem. (Thanks to Stephen King's On Writing for that one.)

A compelling reason for the reader to keep reading. If you don't give them a reason, someone else will.

(Check out Why Editors Focus on Page One by Jane Friedman for more good information, or How Not To Start A Novel: Four Things to Avoid by Janice Hardy