1) remove the old adhesive from the wooden part. Clean off from the flute and from the wood any part of the adhesive or glue that may be left.  2) Cut a rectangular shaped strip of adhesive and attach it firmly to the Woodify Wave.  3) Before removing the adhesive cover, try placing the Wave in the right spot. Use a permanent marker or a pencil to mark the correct position of the Wave.  4) remove the adhesive cover and place the Wave GENTLY on the tube, without pressing too much and check with your hand in place if the position suits you. Be careful to not press too much on the Wave. In this step you might be able to remove and re-attach the adhesive a few times.  5) once you found the correct position, press firmly with both thumbs on the rest, so to really attach the Wave. 6) Don’t touch the instrument for 30-40 minutes, in order for the adhesive to really seal.