Only you know how you want your story to work out, but consider the words of Cecil B De Mille (I think):
Start with an earthquake and work up to a climax.
And from the Agents pet peeves thread:
"Slow writing with a lot of description puts me off very quickly. I like a first chapter that moves quickly and draws me in so I'm immediately hooked."
- Andrea Hurst, Andrea Hurst Literary Management
" 'The Weather' is always a problem - the author feels he has to set up the scene and tell us who the characters are, etc. I like starting a story in media res."
- Elizabeth Pomada, Larsen-Pomada Literary Agents
"I know this may sound obvious, but too much 'telling' vs. 'showing' in the first chapter is a definite warning sign for me – the first chapter should present a compelling scene, not a road map for the rest of the book. The goal is to make the reader curious about your characters, fill their heads with questions that must be answered, not fill them in on exactly where, when, who and how. Don’t ever describe eye color either..."
- Emily Sylvan Kim, Prospect Agency
And the often quoted advice - switch chapter 1 and 2 around. Start right in the middle of the action, explain it later.
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