To sell/shop, a form f exchange to gain products through the spending of money. However for these products to receive attention one must display them brilliantly, and I chose to do so by having a catwalk plaza (it's like a trapezium catwalk) for fashion models as the main focal point. terraces would then give view to it  
Architectural elements utilized are Subtract, Shift, and Double volume to create various terraces that allow different viewpoints into the catwalk plaza. Display boxes with purchasable products have been placed throughout the building so as to allow everyone to buy products no matter what level they are at. The catwalk is exposed which allows people not even in the building to see the fashion shows as well, space can be used to display items as well when not used for fashion shows
gardens have been placed to give a breather from constantly watching fashion shows or choosing products and they also act as different points of viewing  
Source of inspiration from the Omotesando GYRE by MVRDV Architects