I've just managed to put my finger on what I HATE so much about these studio mocks.
They aren't mocks. They're re-creations. There's no creativity, no input from you, no imagination, no "what-if", no "maybe" etc.
Basically, you've decided to use Asa's webspace to show off that you can draw a picture of something that exists in real life.
Well done you. Also, you display classic young mocker's attitude of not listening when people tell you to stop.
-5/5
I think you can have a good studio mock/recreation, though. These certainly aren't examples of one, but if the time and effort are there, then they can be quite good.
On top of this, the good studio mocks also experiment with what is already there, and try something different.
This mock certainly isn't a good example, as the mocker hasn't listened to anyone, bar someone who mentioned the colour of the chairs, which is probably easy to change. The studio hasn't even been done that well, and the desk is quite odd, too.