I finished my electric tree! The electric tree is the last electronic project, and the class with be starting aviation. I managed to solder eight lights to my tree, but in the end I had to cut one light off because it didn't work. The soldering on the electric tree had to be precise, and the positive vs the negative sides mattered since we were working with LEDs. Overall, the project was quite simple after I got the hang of it.
The LEDs change color!