Summary
You have now successfully completed your first practical modeling tutorial using Blender! Modeling tools work great for models such as robot drones because these tools are ideally suited for mechanical types of models, although there are no limitations to the kinds of 3D assets you can create by using these tools and methods.
One of the amazing skills you have now learned is the ability to follow reference images to guide your 3D modeling so that the final result is very accurate.
Furthermore, you've acquired other skills such as manipulating meshes in the 3D Viewport, extruding faces and vertices, beveling edges, and subdividing meshes to smooth out the block-out shape, and you've also learned how to build custom-shaped faces that you can then turn into 3D meshes.
You now have both the practical experience and theoretical knowledge from Chapter 1, An Introduction to Blender's 3D Modeling and Sculpting Tools to create your very own 3D assets for your...