Create a faux stone wall by adding joint compound to your home's surface. Joint compound was developed to join and seal drywall seams but serves commonly to create textured surfaces on walls and ceilings. After applying it, you may paint the faux stone finish with latex paint, then glaze it for additional surface depth. You don't have to apply the plaster very thick to make it look like a decades-old real stone wall.
Wipe the walls down with a clean rag to prepare the room. Brush off dust that has accumulated on the crown molding and baseboards. Cover the molding and baseboards, and all surfaces adjacent to the wall that you're going to plaster, using painter's tape and masking paper.
Move all furniture from the room. Stretch painter's plastic tarps across the floor. Tape the tarps down to the floor with painter's tape. Cover with additional drop cloths if necessary.
Open the bucket of joint compound. Add a small amount of distilled water and mix, if the plaster looks dry or crumbly. Add about 1/4 cup of water at a time. Use a hand drill with an attachment made for mixing plaster, sometimes referred to as a squirrel mixer. Blend all the contents of the bucket with the mixer, ensuring it is evenly mixed. Mix until the plaster is a smooth paste, about the consistency of peanut butter.
Use a putty knife to scoop out a portion of joint compound and place it onto your drywall trowel's flat surface. Hold one edge of the trowel against the wall's surface and begin to apply the plaster. Move your wrist to dig into the wet plaster and move it around the wall, creating texture.
Continue the process until the entire surface is covered. Allow plaster to dry about 24 hours. Sand the dry surface lightly, then remove dust with a damp rag.
Paint the stone surface with a long-hair, rough nap roller made specifically for textured surfaces. Apply two coats of paint. Dab paint onto any areas the roller does not cover, using a sea sponge or chip brush.
Stir together 1 part dark brown acrylic paint and 3 parts translucent glaze if you want to add a glaze finish to the stone wall's surface. Roll on the glaze in small sections measuring about 3 feet by 3 feet. Blot the entire surface with dry terry towels to remove a small amount of glaze from the surface. The finished look will have an aged, stone appearance.