Refer to the first instructional video for the circuitry and wiring:
https://www.youtube.com/watch?v=xUqimbDLk08Materials
Materials:
Ready made solar bottle
LED light
Clear epoxy
Solar panel
Connected circuit and wiring
Steps:
1. Get the bottle cap of the Solar bottle. Drill a hole to insert the wire then connect them to the led light.
2. Seal the bottom of the LED light with clear epoxy
3. Make sure to test the mechanism before you put and seal the led light inside the solar bottle
4. Insert the LED light into the solar bottle.
After finishing the above steps, you can now install your solar night light on the roof.
Make the video viral to have a brighter and cleaner environment. 
Post time: Feb-15-2017