The shadows was a decision i have made because outside the window is sunny and i make them bit larger.
I understand, but I am talking about the objects shadow, not the characters ones. The shadow been cast from the window is different from the shadow been cast into the scene. Take a look at the purple character over the desk (the light comes from the right side), but the window is at its LEFT side, casting shadows agains a light source?. How this could be possible?
The table receives light from the RIGHT side, but cast shadows towards the right side?
See this image. The yellow arrow is the light source from the right. The green arrows shows the different light directions
Also, take a look at the bed angle - it makes he bed comes from inside the wall
(You can correct that if you do not like this one)
We aren't talking about a personal preference, we are talking about an error. What I am giving to you is a feedback, to fix an error on your work.