From black fabric, cut a 19-inch square for front and two 19-1/2×13-1/2-inch rectangles for the back. Use white chalk to mark center on pillow front fabric.
Using the image as a reference, draw a ribbon placement pattern on white paper. Lay white transfer paper over one corner of the pillow front. Lay the traced pattern over the transfer paper, aligning placement guides and center marks. Using a tracing wheel, transfer the pattern to fabric. Reposition and repeat to transfer pattern to each corner of pillow front.
Trim pieces of tape to fit ribbon design on pillow front. Remove paper backing from one side of tape pieces and finger-press tape in place on pillow front.
Remove paper from top sides of tape pieces. Referring to ribbon placement diagram, lightly press ribbon on tape, centering ribbon over lines and mitering ribbon at corners. Place a small piece of tape at ribbon overlaps to hold ribbon in place. Fold under ribbon end; secure with tape.
Using orange sewing thread, topstitch edges of ribbon to pillow front.
Download the October 31 artwork at the link, below. Following printable fabric manufacturer's instructions, print artwork onto fabric. Trim the design to 8-1/4 inches square. Apply a strip of tape to back edges of design fabric. Position the fabric design on pillow front, centering it inside the ribbon design. Topstitch design fabric to pillow front with white thread.
Fold under 1 inch of one short edge of each pillow back; stitch folded edges in place inside raw edges.
With right sides together, align pillow front and the two back pieces, overlapping sewn edges of back pieces. Sew together to make pillow cover; turn right side out. Place pillow form inside pillow cover.