How do I create a prewar look in a modern room?

To create a prewar look in a modern room, start by layering crown molding and chair rails with classic proportions. Use warm neutral paint colors combined with rich dark-academia palettes to add depth. Incorporate built-in shelving and vintage furniture sourced from thrift shops or estate sales. Focus on proportion and details like finished cased openings to add authenticity. This gradual DIY approach builds character without overspending.