All my comments are colour coded and i shall circle/highlight the area I want to draw your attention too.





1) All around the level, you've just completely cut off the table. The only time you can do such a thing is if you want to create a shelf on the wall, but other than that Avoid this.

2) Corner off your counters. (hopefully the picture gives you an Idea of what I mean) It makes things look more professional and it brings out the counter more if you corner it off (Add borders).

3) Just like you have for the door add borders to your window to bring it out.

4) You need to add a wall in the areas highlighted in purple. It looks like floating tiles.

I quite like this level. Take your time when levelling for the first couple of time and eventually you'll become accustomed to levelling and be making levels quickly and ​most of all be innovative.