Sew arms and ears: print pattern pieces, and cut out. From wool flannel, cut out 2 body pieces, 4 arm pieces, and 2 ear pieces. Cut 2 more ear pieces from cotton shirting.
Pin 2 arm pieces together, right sides facing; stitch with a 1/4-inch seam allowance, leaving base open. Repeat for remaining 2 arm pieces and for ear pieces, using 1 wool piece and 1 shirting piece for each ear and leaving base open. Turn arms and ears right side out.
Press with iron so edges lie flat.
Sew body: pin body pieces together, right sides facing, below the neckline, leaving an opening for each arm: 1 inch on 1 side, 2 inches on the other (for adding fill later).
Sew lower portion of body (below neckline) with a 1/4-inch seam allowance; with scissors, notch area where legs meet. Fold in bottom corners of each ear so edges overlap slightly at the center of base; pin in place between body pieces, so ears are beneath head and their unsewn edges are flush with body's perimeter. Pin and sew around head.
Stuff and assemble bunny: turn body right side out. Stuff body and arms with fill, using the 2-inch opening for body. Hand-sew arms to body, and slip-stitch to close larger opening.
Add features: mark placement of eyes and nose with pins. Create each feature with embroidery floss and needle, using a single running stitch.