Step 1: Measure & cut your ceiling beams. Stain them in your preferred colour (we went for English Oak), and then either varnish or wax them.
Step 2: Cut strips of masking tape in the exact size of your ceiling beams and place them on the ceiling you’re about to plaster, where you want the beams to go.
Step 3: Mix together polyfiller, water and paint to your desired colour, and plaster the ceiling.
Step 4: While the plaster is still wet, carefully peel off the masking tape, leaving sections of plaster behind with spaces for the beams to be glued in place later.
Step 5: Double-check that the beams fit perfectly.
Step 6: Allow to dry, and then glue the ceiling beams into position.