Coming in about 10 x 6", the mountain and background trees are etched (with a defocus) on the back of the acrylic, while the right foreground tree and left grass area are a light etch (with defocus) on the front.
It’s got that rectangle cutout in it, there just happens to be a light RIGHT THERE, and I probably could have make the spacing a bit bigger (one of the things I learned).
I also used all the light. The small one is wrapped 3 times around, the big one 2.5 or so.
Ahh, I was looking at the top photo, it looked like light sneaking through the hole, to me. Carry on! (Mine ended up with a light right there, too – I really had to work to convince it to stay down in the light channel where I wanted it!)