A Strange device to get the stuff flat

So here's the mess I did to be absouletely sure the water would be flat : -create a box around the diorama -pouring the resin with some excess that will run on the wooden borders -press a glass surface on the top and keeping it on place with some of the devices that you can see on the picture (des '"serres joints'" en français). I have been doing that 3 days ago. It's mostly a success but I don't have any pictures yet! to be followed..