Step-by-Step Guide

1. Begin by laying the checkered pale-pink floor tile precisely in the center of the room, ensuring alignment with the perspective grid. Follow this by adding the pink vertical-striped wallpaper to the two visible walls, carefully lining up with corners and the window slot on the left wall. Ensure the recessed sill on the left window remains empty. Apply the rounded pink baseboard trim around the perimeter alongside the thicker rose-pink outer rim. Adjust the ambient light and background to achieve the correct pastel tones on screen.
2. Install the vertical circulation starting with the right-hand pink staircase, leading up to the mezzanine platform, aligning its top landing precisely with the mezzanine. Position the mezzanine above the lower counter area, extending left but stopping before the wall, with a semi-transparent curved glass railing attached at the front. Ensure correct depth ordering for upper display cases, and finalize with a small upper-right landing for a blue bear figurine.
3. Outfit the lower area with a wide counter along the back wall, topped with two glass display cases filled with pastries. Place the cash register with a small purple cashier plush pointing towards the entrance, and decorate with plates, a utensil stand, and a purple-bowed counter skirt. Arrange takeaway bags, boxed pastries, and a cake slice display on the left shelving. Incorporate green plants at left front and right corner positions, and pastel jars against the back wall near the stairs.
4. Complete the mezzanine and entrance by placing three round café tables equipped with pink tablecloths and biscuit-shaped chairs, adorned with desserts and spoons. Position a glass display case by the entrance and a bunny on a pink mat inside the door. Add a sandwich board menu sign outside the entrance and a purple bear figurine atop the stair landing. Decorate with bows on counter skirts, and a cupcake poster beside the stairs.