As stated in the description, I used https://en.makercase.com/#/ to make the 5 sided box. I then used Silhouette Studio to cut a rectangle from each box side. I used some svg files I had designed previously for vinyl projects to weld (join) on the box sides. 

I made an extra side plus included an empty frame for making future sides. (You will only need a total of 5 sides)

I also decided to make a smooth sided top and bottom that was a little larger to have a more “finished” project.

I decided to stain my plywood prior to cutting. This can be done after if preferred. 

Make your cuts. 

The top piece with the finger tabs will need a hole to place the battery tea light inside and turn it off and on. Keep the circle that is cut out so it can be glued to the top smooth sided piece (that is scored for placement).  This way, when the top is on, it will fit into the hole and not slide off when moved. 

Cut and glue vellum paper to the inside of each side. I used quick drying super glue.

Assemble the side, top, and bottom pieces with the finger tabs. It was tricky to get it all together and glued. Be patient and it will come together. 

Glue the bottom smooth sided piece to the very bottom giving strength and a more finished look. 

Get the circle that was cut out in step 2 and glue it to the top smooth sided piece (It is scored for placement). 

Place the tea light in the inside center and enjoy.

Notes:

I measured my tea light width and made a ring to glue to the inside bottom center to hold it in place. It is not necessary and would change depending on the size of the tea light used, so I didn't include it in the cut file.

Fairly lights may work great in this project as well simulating stars in the night sky.

I plan to make a ‘lazy susan’ type base that turns slowly to place the box on.