1/2 yard cotton lycra stretch jersey knit. Other knits can be used, but be sure it has at least 50% stretch and good recovery.
1 front on fold, 1 back on fold (use the dashed line for the back neck), 2 sleeves on fold, 1 neckband
Seam allowances are 1/2″.
Sew sleeve to armscye, right sides together.
Sew underarm and side seam.