Easy you say - ok I agree, but you can go easy on someone who is at least ... I dont know - trying ?
Posting a white box and asking for criticism is somewhat like rendering a teapot and asking for criticism.
The author didnt say what kind of criticism he is looking for or at least what is the purpose of this work nor mentioned the problems that he is struggling with.
The above was the reason behind my question - it might look ok for a simple game engine model (not my piece of cake so not really sure about it) but as an archvis needs a lot of improvement.
And lets clarify, I dont have anything against users who ask how to do certain things (ask, dont demand) - eg. "I'm having a problem with my vegetation, the reflection/refraction doesn't seem right, I struggle with it for some time and can't work it out, can you guys have a look at it and help/suggest any solution?"
You DONT have to be Bertrand or Juraj to be able to CLEARLY see that you can improve everything in this picture...
modeling, composition, shaders etc. If you dont - sorry, face the truth, you are a blind man, and if you plan to do this for a living - really - change your profession or keep in mind that a lot of time will pass untill you will be able to make any profit out of it, and if as a hobby - this will cost you a lot of time.
Please stop petting people by throwing them advices like the "realism" added by the vignette :D, I know you had good intentions Rawalanche, but vignettes and abberations wont make this picture even remotely realistic without improving the topics stated above.
So:
coposition - average human height is 1,6-1,75meters, try to place your camera at more or less this height, you will get more naturall looking composition right away.
shaders - your shaders look 100% diffuse and real world materials dont behave this way, add some reflection to them - try to observe this aspect in real environment
modeling- force yourself to model minimum amount of detail according to the distance you will render your model from. Over-simplified models will never look realistic, try adding all the architectural elements the building lacks at this stage.
Prepare reference photos for those elements. Pay attention to detail and scale.
surroundings - think of adding some environment to your building, if you can't come up with some of your own, photograph the place you like, modell it and place your building in it, try modeling as best as you can and add as much details, only this way you will improve your skill and sense of scale and space.
last but maybe the most important - observe observe and once more - observe the real world, try to catch up all the nuances, how things and certain materials reflect their environment, what is their structure, texture, what is the balance between directly lit and diffuse lit surfaces in different lighting conditions etc. Observe as much as you can and then try to recreate this.
also - familiarize yourself with this great article by Lasse Rode from XOIO - it covers all the generall topics - composition etc:
http://www.ronenbekerman.com/photographic-approach-in-architectural-visualisation/good luck on improving your work.