3D Project environment development

Today in class we started to make the basic outline and shape of our chosen environments for our 3D project assignment. I chose to create a WW-era bunker that has a total of 5 rooms but some of the entrances to the rooms had walls as placeholders instead of actual doors. Later on we had to stop what we had done so far and go and give constructive criticism on someone else's environment, I gave some positive points to someone who created a textured chair and that I also said I would've made the room first so that he has an idea of how big the furniture will be in the room so he doesn't have to scale it later on. In return that person told wrote that my bunker had good room symmetry but said that I should also texture it, I was planning on texturing my environment eventually after finishing the initial outline and created all the rooms. This is what my bunker looks like so far...

Obviously it's not finished yet but the shape and the rooms are almost done.