To write a proper essay based on your file , I would need to know what the drawing actually depicts. Since a .dwg file is a CAD (Computer-Aided Design) format used for architectural or engineering blueprints, an essay about it usually focuses on the technical design, the purpose of the structure, or the creative process.
If you can describe the contents of the drawing, I can help you draft a structured essay. Typically, a "proper essay" for a design project follows this outline:
: Summarize the significance of the drawing and how it serves as a foundation for a final physical product.
: Discuss the aesthetic choices—why certain lines, layers, or symbols were used to convey information.