This is my concept for the competition.

After back and forth consideration, At the end I have chosen three traditional but classical perspective view angles (from park look toward to library, Main Entrance, Looking up by standing near staircase of interior view)

1, Exterior Image
I will render it as an overcast and cold evening after snowing, The sky is not too dark, the ground is covered by snow, a pond skimmed with ice at the foreground. Freeze snow with warm tone light to create quiet and harmony atmosphere. Not too much activities but maybe just few kids skating and snowball fighting. The main purpose of this image is too show the library and its related surrounding.

2, Interior image and An image of your liking
I would like to show the exterior and interior details of the library, I will select either winter scene or autumn scene for the exterior view, have not decided yet by now. It will be culture atmosphere for the interior view by using looking up perspective to express human desire for knowledge. We will see a lot of partial details from those two views by using refined material and texture.

Of course, To achieve all those that required a detailed model, so the modeling workload is huge, I have started refining the model. Keep Going!