What you needcrochet hook size 4.00, small amount of cotton yarn or worsted, whichever you prefer
row 1: ch 12, hdc in 3rd ch and across, ch 2 turn (10 hdc)
rows 2-?: hdc across, ch 2 turn
continue row 2 until piece measures about 8″ across
You can add or take away rows here, depending on the size of your cup.
Fold your cozy in half, and work sc along end of rows to close shut, finish off here for a plain cozie.
OR for ruffles, do not finish off instead:
ch 1, and work sc evenly across end of rows, sl st to join
ch 3, work dc, ch 2, dc in same st
work *2dc, ch 2, 2dc in each st around*, sl st to join, finish off
Other finishing touches:
With eyelash yarn, or yarn of a different color, join with sl where you finished off after sewing the cozy closed and work sc around.