Querying an Agent

I'm getting ready to query an agent for my middle grade novel The Knocklepockles and the Great Move.  I've been working on it for seven years.  I met the agent at the recent SCBWI-LA Writers' Day Conference in Pasadena.  Great conference by the way!  Despite the many years I've worked on the book, the hardest part of the process was writing a one page synopsis.  It took me a month and I agonized about it.  It's done except for some feedback.