Don't sweat it. In order to post multiple images you'd have to use an image hosting site (at one point I was wondering if there was something I was missing lol). Also, thats one way of showing a wireframe, another less messy way is to toggle on wireframe on shaded (Shading> Wireframe on Shaded). About the trashcan, the model doesn't have to complex to look good in a scene, so by all means, texture it if it gives you the look you want. I will say one thing though, you need to consider proportion, that door is really small compared to the toilet.