How do you splice a pattern for a drapery horn?

To splice a pattern for a drapery horn, start by laying out the original pattern pieces on a flat surface. Identify the areas to be spliced, marking where you want to join the pieces, and create a new seam allowance at these points. Cut the pattern pieces along the marked lines, then align and pin them together, ensuring they match up seamlessly. Finally, trace the new combined shape onto a fresh piece of pattern paper for cutting.