You must keep sending work out; you must never let a manuscript do nothing but eat its head off in a drawer. You send that work out again and again, while you're working on another one. If you have talent, you will receive some measure of success - but only if you persist.
Comments
Write a story about how
Write a story about how humans could live on the Moon. This is mundane scifi, so make sure your submission matches their guidelines... They are PICKY.
http://www.nss.org/news/releases/pr20080229.html