Simple solution: send your piece to Debbie to cut in along with a photo and instructions of the style you want. Turn around time from Oz is about 14 -17 days.

She can also bleach the knots, but be warned this can weaken them and lead to premature shedding. If you have got bleach on the shafts turning them orange just dye them again to match the rest of the piece. Takes 15 minutes. Put some conditoner on the underside of the base to stop the dye getting onto the knots and preferably do it with the piece hanging upside down pinned onto a styrofoam head base.