Make up the adhesive according to the directions given on the packet at least 2O minutes before you want it. This gives it time to absorb the water properly and become completely smooth.
Always make up a complete packet at a time to ensure a correct consistency-any paste left over can be kept in a completely airtight jar and be used for touching up, if necessary. Don’t mix batches of paste. When the wallpaper is cut, it is a good idea to test for colour-fastness on a waste piece. If the colours do run, take extra care not to get paste on the surface of your cut pieces.