The ad supported free pattern is here: https://christacodesign.com/four-leaf-clover-crochet-head...

Crochet up a three or four leaf clover and attach to your lucky little one’s headband, hat or shirt. Headband pattern included. Any worsted weight yarn can be used. I prefer cottons for headwear. No guage necessary, adjust your hook for the size clover you prefer. I used an F to keep it small because I crochet looser.

Skill Level: Easy Crochet Pattern
Sizes: Adult, Child, 0-6mo, 6-12mo, 1-2 yrs, 2-4 yrs, 4-6 yrs
Languages Available: English

Materials
Required Yarn:
Hobby Lobby I Love This Yarn! Solids Category #4 Aran
Yardage: Between 2 and 3 yards
Meterage: Between 1.83 and 2.74 meters
Hooks: US 6.0 - 4 mm
Gauges:
5 stitches x 3 rows = 1 inches in sc