I received my new draperies from Half Price Drapes a couple of weeks ago but didn’t get around to training them until just the other day.
From Half Price Drapes: After being hung, draperies need to be “trained” so their pleats and folds hang evenly. Train the folds in your draperies by stacking them open and arranging the folds evenly from top to bottom. Pull pleat folds forward and push back the folds in between. Loosely tie strips of fabric around the tied draperies for at least three days. When the ties are removed, the folds will be set.