Critique my query PLEASE

I have just posted my query on the blog so that any of you who are willing to give your honest opinion and critique on it will do so.
I ask that you please leave a comment and tell me what is good in the query and what needs to be changed.  I would like to get other writers' thoughts on my query before I begin querying agents once more.  If you have some free time I beg of you to read over my query and tell me what you think.
(I may also post up my synopsis soon if anyone is willing to read that).
THANKS to anyone who reads it and leaves feedback.  Please do not be afraid to tell me that something is wrong in the query because I want to know.  Thank you all!

Please critique my query?

                                                                                                            August 12, 2010

    To whom it may concern,

    Hello, my name is Lindsey Sablowski.  I have written a book called The Magic of Light.  I have been revising and adding to this book for four years now.  The book is young adult fantasy fiction that would be best for middle school children and above.  The word count of the book is 88,160 and there are 152 pages.  I would appreciate you taking the time to consider representing my book. 

    The Magic of Light is the story of two young teenagers, Trisha and Keith, who discover they have magic.  The two join together with others to free magicians who have been kidnapped and to ultimately stop the Dark King from causing chaos.  Some of the main characters include Keith, Trisha, Prince Nicholas, Bob, and Rachel Terims.  This group of un-advanced magicians must get past their fears and learn to fight.  It is not before long that they realize they must fight the Dark King and that fight alone will determine who lives on in the magical world and who does not.

    I am a participant of National Novel Writing Month, ScriptFrenzy, and WriteOnCon.  I am also an active member of Inkpop, a widely known writing website for writers of YA literature.  I enjoy writing and have gotten two short stories published in the Howard High School magazine.  I am also a staff writer for Teen Inkst Magazine and have completed several short stories to benefit that.

            Thank you for considering my book for representation and I look forward to hearing back from you.

    Sincerely,

Lindsey Sablowski

Querying

I just felt like posting something because I just emailed a query to another agent.  Once again, however, this is an agency that is only going to respond if they are actually interested.
Wish me luck?