The video starts by demonstrating how to draft the back pattern for the jacket. This involves drawing horizontal and perpendicular lines to define the neck, shoulder, bust, and hip measurements, concluding with adding a 1cm seam allowance.

Next, the front pattern is created by modifying the back pattern. This includes adjusting the shoulder and armhole lines, defining the front neckline, and adding a 2cm outward extension for the button area, along with a 1cm seam allowance.

The sleeve pattern is drafted by marking a straight line and horizontal line. Measurements for the armhole curve, sleeve length (55 cm), and wrist width are used, with adjustments to create distinct front and back sleeve lines, finalized with a 1cm seam allowance.

The collar pattern begins with a straight and horizontal line. The collar's height (3 cm) and width (7 cm) are determined, and curved lines are drawn to shape the collar, including an extra 1cm extension for the front, and a 1cm seam allowance.

The first sewing technique for double-faced fabric, the 'connecting seam,' is introduced. This method is used to join two edges of fabric. It involves creating a loose seam, separating the fabric faces, sewing one face, connecting the other to a new piece, trimming, pressing folds, and hand-stitching to create a clean, seamless connection.

The second technique focuses on finishing the raw edges of the fabric. This entails creating a loose seam 2cm in from the edge, separating the fabric faces, folding the edges inwards by 1cm, pressing them, and then hand-stitching the fold to achieve a clean finish, similar to how the connecting seam is finished.

The tutorial proceeds to apply these techniques to the jacket pieces. The front bodice is prepared by drawing lines and creating loose seams, with the ending and middle lines finished using the second technique. The back bodice is similarly prepared and finished.

The front and back bodice pieces are then connected at the shoulders and sides using the 'connecting seam' technique, ensuring a strong and clean join for the main body of the jacket.

The sleeve pieces are prepared by marking lines and creating loose seams. The ending line of the sleeve is finished using the second technique, and the inside sleeve lines are connected using the first technique. The sleeves are then attached to the bodice at the armholes using the first connecting seam technique.

The collar is prepared by marking lines and making loose seams, with the outside line finished using the second technique. Finally, the collar is attached to the jacket's neckline using the first connecting seam technique.

The last steps involve adding buttons and creating buttonholes to complete the jacket. The video showcases the final result, highlighting the warmth and reversible nature of the double-faced wool jacket.