Decor, indicated by the 'Decor Points,' is obtained by arranging furniture in the workshop. It is displayed at the top of the game screen, represented by a leaf icon and a number.
To increase the Decor Points, you need to place furniture in the workshop that contributes to the Decor Points. A higher Decor Points increases the probability of receiving rare items as a 'Lucky Bonus' during worktables or production.
If the Decor Point is low, you won't be able to install farm and worktable related items such as fields, trees, livestock, crafting tools, etc.
The workshop's 'Clutter' increases if there are many items placed inside. A high clutter percentage results in penalties, making it impossible to install new furniture items. Opening a new area and expanding the workshop will lower the clutter.
Therefore, it's important to place items with a high Decor Points in a way that occupies minimal space to optimize your workshop.