Here is something about writing titles that I posted on the SCBWI boards a few years back. This helped Jennifer J. Stewart find the title of her book, Close Encounters of a Third-World Kind, which is why it has specific examples. The general "rules," though, should help you come up with a title for any book.
I hope this helps you too.
Eye grabbing titles tend to follow these rules (although there are many exceptions):
1. Brief (five words and under)
2. Clear (title tells the reader what the book is about)
3. Mood (title makes the mood of the book clear -- humorous or otherwise)
4. Paints a picture in the reader's mind
5. Appeals to the reader's interests
One good way to come up with a title is to sum up a scene, the theme, the conflict, or the main character of your book.
Is there a scene you can describe in very few words? ELEPHANT ATE MY PEANUT BUTTER? HERSHEY KISSES BEAT GOAT KISSES, ANY DAY?
Another thing you can do is free associate. Take some of the elements of your story, and ask yourself what they sound like or make you think of. Nepal, for example, sounds like apple to me, which makes me think of these titles:
THE NEPAL OF MY EYE
AS AMERICAN AS NEPAL PIE
AS DIFFERENT AS NEPAL AND ORANGES
Third world country makes me think of:
CLOSE ENCOUNTERS OF A THIRD-WORLD KID
So that's my two cents on titles. I hope it helps you, and if I'm too late, I hope I've helped someone else.
(Who really ought to put these things on her own site so they're easier to find.)
And now I have. :-)