Winterfell 200*300

The Castle Winterfell models that were laid out earlier did not suit me for various reasons. Liked the idea to create a lamp with LEDs. In this model, it is all provided. All towers are hollow. Designed for painting and installation inside the LEDs. I enclose possible schemes. The model is printed on the table 200 * 200 mm, and is connected from 2 pads. Plates are interconnected by glue. The remaining parts are inserted into their seats.
This thing was made with Tinkercad.
Edit it online https://www.tinkercad.com/things/8yJlKBw2E6B
To connect 20 LEDs (20 mA, a voltage of 3.4V) to a 12V power supply unit. You will need to be connected according to the circuit I attached. In the end, you will succeed.
Rated resistance of resistors: R1..R6: 90 Ohm; R7: 260 ohm
The standard values ​​of resistors R1..R6: 91 Ohms (0.05 W); R7: 270 Ohm (0.125 W)
Color marking:
R1..R6: white, brown, black, gold, gold
R7: red, purple, black, black, gold
Power dissipation on resistors: R1..R6: 36 mW; R