Is there a reason why there is a blur effect within the graphic design?
I feel like the effect isn’t something needed in a cafe render since it seems nothing related to the overall design. I would recommend decreasing that, since it blurs out the entire design leaving the image quite odd looking.
The image looks here and there, however the effects is quite overdone in the image, perhaps try to add some warm lighting casting through the building implementing shadows on certain parts of the building try adding color since the building looks overall dull looking, the design doesn’t have a feeling of a cafe approach.
My only simple recommendation would be to add more characters in the scene. That way it’ll look like an interesting cafe if you view different images of cafe designs you’ll see there either surrounded with nature chairs, tables, menus, buildings ect. Try gathering small ideas and see what you can do to make your scene more interesting.