Single Gecko Feeding Ledge

This is my first project ever. I've deceived to create a simple single slot feeding ledge for my gecko as the 2 slot one I bought on eBay could not feed my terrarium.

Please note there are 2 versions of the item, top and bottom mounted meaning on one of them the suction cup goes above and the other the suction goes below the feeding ledge.

Required Parts:
Suction cup with a screw fixing (the nut must be more than 10mm in diameter) - e.g. https://www.amazon.co.uk/Suction-Cup-Plastic-Without-Adhesive/dp/B07LCGQCL3/

1oz Plastic Cup approx. 50mm in diameter- I bought mine in local catering shop. they came with attached lids which I just cut off before use.