So far is not so bad.
I quite like the soft light, some consideration:
Reinforce the light above the table, orange-ish as it is, but stronger.
Use a HDRI light or play with Corona sky in order to get more blue light coming through the window.
Revise the sofa material,delete the cushion they are not good.
Add more reflection and accuracy on the material/texture, the wood wall for instance.
Avoid the repetitive tile on the floor.
Last but no least a little of contrast over all the image.
Have fun!
