I have provided detailed drawings for the display area, along with two design rooms added, where customers can meet your designers for personal consultation. I have also added a pantry. High end stores serve light refreshments. As for the flooring, the chessboard flooring is very impressive and classy. However, if you don't want to invest in the same, you may use black and white carpets as shown in the images. I suggest a black and white decor.
If you do not change the flooring, you could use a brick cladding on wall as shown in the images, alternately, you could use a similar wall paper.
The pergolas shown can be custom made by carpenters or by IKEA.