Oh that looks pretty! I like the tent how it looks pretty and billowy, and the table has lots of different levels to attract the eye.
I think Id want a long piece of colored cloth or something like that kind of swagged over the top front and down the sides to draw the eye and frame the entrance. If you'll still be up in the dark hang a golden lantern from the center and make the whole thing glow from outside!
I might put the table back a little into the tent, not all the way but just so that customers can be shaded in the tent instead of standing in the sun. You might also consider a color coordinated cloth and some other decor for some contrast.
Very nice, and not cluttery...you can see everything very well...maybe near the top corners you could get a couple small, colorful wind-spinner thingies...you know, nylon wind sock things that move in the breeze.
You have some really nice display pieces! I'd want to come and take a look. If you're asking for suggestions, I'd go for a pop of color....you've got a lot of white there. When you're trying to sell at a market/fair, you want to stand out, not blend in. Walk around the market and see which vendors booths stand out to you. Figure out why, then go from there. Hope you sell out!