Craft Show Cards

So...I signed up to participate in a craft fair. It's actually going to be my mom and sister working the table because my sweet DH will be out of town and I just can't take the 2 kiddies there. It's a craft fair in my mom's community and i'm going to be selling cards, gift bags and boxes, and maybe a few other altered things. Here are some cards that I recently made for the craft fair. I'm trying to keep things simple, so they fit in a standard card, only need a normal stamp, aren't too bulky. When people buy them, I want people to use them with minimum hassle!!




I used Basic Gray, Mellow line to make these. I'm going to make thank yous, birthday cards, and maybe some hi/hello/thinking of you cards. I'm a bit lost, not knowing how many to make. Anybody ever worked a craft fair before that has some advice????