I love raglan shirts, they're so cute! and even better in a contrasting fabric which is great for using up scraps and old clothes.
Cut the interfacing and iron onto the back of the underlap.
Iron a strip of interfacing onto the left edge of the front.
Stitch underlap to left front sleeve.
Pin and sew side seams.
Stitch sleeve seams.
Set in sleeves.
Leaving underlap unsewn.
Fold neckband and stitch ends.
Sew neckband in place.
Hem sleeves and bottom.
Apply snap fasteners.