Wow! I'm getting lots of great entries already! Since I've gotten several repeat questions, I'll try to answer here.
Deadline -- End of the week. I'm hoping to post pictures of some or all of the entries on my blog on Friday, so if you can get them in by Thursday, that would be great.
Format -- Digital of some sort. Something like a jpg.
Orientation -- I'm open, but I would like something horizontal for the bottom of the pattern.
Hmmmm. . . I think that about covers it. I just want to say THANK YOU! to everyone who has entered so far. It's so cool that you would take time to work up a logo for me! I wish that you could all win, but I'll have to choose one. And I will chose the winner on Monday. Thanks again & keep those logos coming!