Choose a cardigan pattern and your size
Gather yarn, crochet hook, scissors, tape measure, and stitch markers
Make a gauge swatch
Adjust hook size if needed to match gauge
Measure your bust, length, sleeve length, and armhole depth
Crochet the back panel to the required width and length
Crochet the two front panels to the required width and length
Shape the neckline on the front panels if the pattern requires it
Crochet the sleeves to the required width and length
Block all pieces if needed
Sew or slip stitch the shoulder seams together
Attach the sleeves to the armholes
Sew the side seams and sleeve seams
Add ribbing to the bottom hem, cuffs, and front edges if desired
Crochet button bands if the cardigan has buttons
Add buttonholes if needed
Sew on buttons or add other closures
Weave in all yarn ends
Check fit and make any final adjustments