Using skin tone yarn, start with a magic circle.
Round 1: 6 sc in magic circle (6)
Round 2: inc in each st around (12)
Round 3: (sc, inc) around (18)
Continue increasing in a similar manner until the body is the desired length, stuff as you go.
Switch to grey yarn for the head portion.
Rounds 1-6: sc around (18)
Attach safety eyes between rounds 4 and 5, 5 stitches apart from each other. Embroider the nose using black thread and create a smile.
Using grey yarn, create a beard by crocheting long chains and attaching them in rows to the bottom of the head. Create a mustache by crocheting a smaller chain and attaching it above the beard.
Using black yarn, create the glasses by crocheting a small rectangle for the frame and two circles for the lenses. Attach all pieces to the doll's face.
Attach the head to the body. Add any final touches or details.
Your crochet doll of your father with glasses, beard, and mustache is now complete!