1. Draw the basic shape of the window first, and you can refer to some pictures or materials of the window for inspiration.
2. Draw the outline of the grid on the window. You can choose different shapes and styles according to your own preferences.
3. Fill the grid with lines or points. You can use thin lines, thick lines or dots to represent different textures and shadows.
4. Add some details as needed, such as window frames, handles, light and shadow, etc. To make the window look more real and vivid.
5. Finally, adjust and optimize the details to make the whole picture more harmonious and unified.
I hope the above information can help you!