Place a non-flammable block base such as stone, bricks, or cobblestone
Build a small opening in the center for the fire
Place netherrack inside the opening
Light the netherrack with flint and steel
Add campfires for a safer decorative fireplace
Surround the fire with stone bricks, brick blocks, or deepslate blocks
Add a chimney using blocks above the fireplace
Leave an opening at the top of the chimney for smoke
Place slabs or stairs around the front for a mantel look
Add andesite, polished andesite, or stone brick details for decoration
Use iron bars, trapdoors, or fences as a screen
Place logs or planks nearby for a wood-burning style
Use soul campfires for a blue flame variant
Keep flammable blocks away from the fire
Place the fireplace indoors only with proper block spacing
Use a campfire under a chimney for smoke effect
Add lighting around the fireplace with lanterns or torches