Experimenting with Texture Projection and Grease Pencil

Created this small scene to learn more about texture projection and also tried my hand at Cell-shading.
Grease pencil was a bonus since I found about it and thought it would be good idea to learn both of them in one small project.
Although I have made some progress, I would appreciate any feedback.

Wireframes showing how simple the scene is except the walls in the back. I lazily used array modifiers to create the brick wall.

Another way to showcase how simple the meshes are that I will be using for Texture Projection

The final render, with grease pencil + cell shading.