bdillion has a good solution.
Only thing I would add is to bend the plexi under the product to eliminate the edge as seen behind the tomato.
Alex
I usually photograph it on an angle so you don't even see the line, this was just pure laziness on my part in this photo. Other times, I want the line there as a separation.
The plexi is hard to bend and hold in place by yourself. I could bake it in the oven and put a permanent bend in it I 'spose. I only use the plexi part of the time. Most of the times I'm just erecting my tent over things that are already there.
The cool thing, you can pick up PVC for free dumpster diving in construction areas.



