Hey these are pretty swell for the first go around.
The first image needs more reflection, sit in your living room and just look at things, all the little things that reflect and are shiny, thats a good way to get into it. I would take the material off the door glass and get some sun streaming in there. Also, increase the pattern on the wall, or get rid of it, I dont think its helping the scene.
We all start somewhere, I started with a great render then after that it seemed to crash for a while, must have been beginners luck, but with a lot of reading through these forums and practice you'll get there. Good job man!