Many of the things I thought have been mentioned, but what stands out to me, is that it is hard to see your product- it is too backlit. A trick I learnt at art school, is that if you squint, you can see the values/contrast of everything. The brightest part is the back wall, and everything else blends in.
If you are photographing outdoors, its best done on an overcast day so you don't have as harsh of a contrast, and there is a more even lighting across everything. You may also want to use flash when taking the picture as well or set up some lights coming into the booth to make it brighter. You wouldn't think that using flash would make a big difference, but when I was photographing my booth, the pictures with flash looked a lot nicer, brighter, and it was easier to see my product.
When I was reading up on juried shots, you want to have as much as the product showing, even if its not exactly like how you would have it in the show, it will show the product more clearly. If that makes sense. I would also recommend inverting your white gridwall on the right hand side from making a 'v' poking into the tent, to poking out. That way you can have the product on the inside facing wall more visible in the photo, rather than just being able to see the sides.
You have very fun bags, good luck!