Querying can be a lonely, scary business. You send out these pages you've been laboring over for months, years, and sometimes it feels like it's been dropped into a black hole. It feels like it's out of your control, and in many ways it is. However, there are some things you can do to give your submissions the chance they deserve.
If your writing sings, you could have an excellent chance. But if you don't send that brilliant writing in the right form--yes, form--it is possible that they may not read what you've sent. Which means they won't get to see how amazing your writing is.