Just made up…but here are my Notes.

Lace pattern:
Rows 1, 2, 4: (K5, p1) around
Row 3: (K1, yo, sk2p, yo, k1, p1) around
Rows 5, 6, 8: (K5, p1) around
Row 7: (k2tog, yo, k1, yo, ssk, p1) around

Mitt “pattern”
Cast on 48, 1x1 rib for 12 rounds.
Work lace for 16 rounds, start thumb shaping on round 17. Increase 2sts every other round for thumb, working lace on back of hand and (k5, p1) on palm, until there are an additional 18 sts for thumb. (66 sts total)

On next odd round, put 19 sts on waste yarn and cast on an additional stitch (48 sts total). Resume knitting lace on back of hand and (k5, p1) on front of hand until you reach your knuckles, then (k1, p1) 12 rounds and bind off loosely.

Pick up 19 thumb sts + 3 additional sts in the gap and knit 4 rounds, decreasing 2 sts on round 2. Then 1x1 rib for 8 rounds and bind off loosely.