Step-by-Step Guide

1. Begin by installing the vault door, gear panel, and lever on the left wall. Place the vault door centered horizontally above the floor, the small gear control panel to its right, and the red-handled lever beside the panel. Ensure a slight gap between the lever and panel.
2. Under the upper walkway railing, set the purple weapon stand. Position the double-headed axe in the stand's left notch and the musket in the right notch, ensuring both weapons fit snugly beneath the railing.
3. Adorn the upper and right walls with the deer head trophy and floating wooden shelf. Hang the mirror beside the shelf, place the lantern next to the mirror, and fit the arched wooden door over the curved right wall opening with three pegs underneath.
4. Position the draped statue with a purple orb and the purple cushioned chest under the staircase. Adjust the statue and chest for visibility and to maintain a clear path.
5. In the center of the room, set the wooden display table with a red runner, placing the jewelry bust, sapphire gem, scrolls, and barrel around it. Ensure harmonious arrangement for visual appeal.
6. Arrange treasures and workspace on the lower level. Start with the treasure chests, coin piles, sword by the weapon stand, barrel stacks, side table, and rocking chair to create a lived-in ambiance.