Craft Show Planning

When planning for a craft show, I'm still trying to guess what is best to bring. So far, my best sellers have been my design-your-own charms. For the show that I did last week, I brought some of my Christmas ornaments; they had lots of positive comments (and only one negative that I heard,) but no sales. My next show is in 2 weeks - I guess that I'll bring the ornaments again and hope for better luck. Maybe it was just too early, or maybe the crowd was wrong for my work, or maybe, .... (I'm still guessing.)