Hey there! Nice job here! It's solid base and great traditional skills! I don't know if you wanted feedback, since I translated what you wrote, but it said there's no need for feedback here... Anyway, there are some comments. Keep in mind where the light source is located to determine the direction of the light and shadows. Notice that I trace some vertical lines from the top corner to the ground, so I can have reference lines to know where to trace the light direction lines (the lines at the bottom). Then, once you have the lines in the ground plane, you can draw lines coming from the light source, this will be the light rays lines, they would intersect with the top corners towards the line direction in the ground. Also, keep in mind that the planes that are facing the light source directly will be brighter than the planes that are only affected by the ambient light. Hope this helps!
