This week, I finished assembling everything together, and installed the light source at the bottom. The whole project is about eighteen layers of cardstock and uses LED strip as the light source.
For now, it is quite fragile, which is a little out of the shape, because the frame is also made by cardstock. I am thinking to make some decorations outside the frame, like coloring. I also feel the light from both side of edges is too bright, so if there is time, I may adjust the intensity of the light source.