How to reach out?

Hey guys, new to game design. I've finished a fully working prototype of a simple strategy game I've been working on, and have published it to the Game Crafter. My game isn't the best thing since sliced bread, but I thought I could hit up some board game publishers. I mean, I have nothing to lose, the worse they could say is no. So. How do I do that? I know I have to make a sell sheet and stuff and email them, but is that it? Also, which small publishers should I ask? Im in the U.S.A.