For this portion of the sew-along have ready the front, two front placket pieces, and the chest pocket.
Press the top edge of the front pocket to the wrong side 1" (2.5 cm).
Using a straight stitch, stitch 3/4" (1.9 cm) down from the folded edge.
Press under remaining front pocket edges 5/8" (1.5 cm). Reduce bulk if desired by trimming corners and even seam allowances to 3/8" (1 cm) or narrower.
Line up the front pocket with the markings on the front. Pin. 
Using a straight stitch, edgestitch around the front pocket. For reinforcement, stitch narrow triangles at the top corners of the front pocket opening. Do this by pivoting at the corners, stitching a few stitches along the top fold of the front pocket, pivot, and stitch at an angle towards the edgestitch line.
Transfer all markings to the center front neckline for the placket.
Cut from the neckline to the tip of the triangle marking. Clip from the tip of the triangle at an angle to the end of each placket stitch line marking, creating a short triangle flap. Be very careful to not clip past the marking lines.
TIP: Clip a taller triangle piece than what is marked by cutting down the center front to about 3/4" (1.9 cm) before the placket stitch lines. Making a taller triangle piece can be helpful when folding this piece in later steps, especially if you are using a lightweight knit.
Fold the placket pieces in half lengthwise, matching the long edges, and press.
With the right sides together match the placket pieces to the front of the placket opening.
Using a straight stitch, stitch from the neckline down to the bottom of the rectangle placket marking at 1/2" (1.25 cm).
Finish the seam allowances together using a zig-zag, serge, or stretch stitch.
Press the placket pieces towards the center front. 
Press the triangle flap and bottom edges of the placket pieces to the wrong side of the front.
With the right side facing up, overlap the right placket piece with the left.
Neatly press and make sure they are evenly overlapped.
Lift up the hem of the front to expose the triangle cut-out and the two bottom edges of the placket pieces. Pin and stitch the layers together using the fold line created from pressing the triangle flap as a stitch guide.
Finish the edges together using a zig-zag, serge, or stretch stitch.
(view from the wrong side of the front)
Optional: To keep the seam allowances in place, topstitch around the placket opening making sure to catch the seam allowances underneath.
May 17, 2022 — Morgan and Matthew Meredith