I am re-building the lamp from scratch and making some improvement to every steps, taking picture, and updating the instructions.

The two best improvement for now are:

• Using polyimide adhesive tape to maintain the components in place while soldering (that I later re-improved by putting the adhesive tape on top of component after they have been aligned instead of trying to align them directly on the tape)
• Using potentiometer to choose andmeasure the needed resistors instead of trying some complicated graphs and use fixed value resistors to validate.