[B][SIZE=4]How can I change the below pattern to 4 years old? :knitting:Anybody can change for me 
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[B][SIZE=4]
Many thanks!
[/SIZE][/B]
This pattern makes a newborn to 6 month size sweater; larger size numbers are in parentheses. If you are using a finer weight yarn, such as Jamie, use the larger set of numbers. It will yield a newborn to 6 month size.
[B]Materials[/B]
1 ball Sport Weight (Bernat Softee Baby) Yarn
#4 straights and dpn’s
2 stitch holders
crochet hook
[B]Gauge[/B]
13 sts and 17 rows to 2"
[B]Instructions[/B]
CO 60 sts
Rows 1-2: K
Row 3 (RS): buttonhole row
for boy, K 2, yo, K 2 tog; work to end
for girl, K across to last 4 sts, K 1, yo, K 2 tog, K 1
Rows 4-5: K
Row 6:(WS) K 4, P across to within 4 sts of end, K 4
Row 7: K
Row 8: K 4, P across to within 4 sts of end, K 4
Row 9: K 4, increase in next st, K 2, * repeat between stars across, end K 4 (78 sts)
Row 10: K 6, slip 2 as if to P, with yarn held in back of work, K 2, slip 2 repeat across, ending with K 6.
Row 11: K
Row 12: As Row 10
Row 13: K 4, increase in next st, K 3*, repeat across, end K 5 (96 sts)
Row 14: K 4, P across to within 4 sts of end, K 4
Row 15: K
Row 16: K 4, P across to within 4 sts of end, K 4
Row 17: K 5 increase in next st, K 4 repeat across, end K 5 (114 sts)
Row 18: K 6, slip 2 as if to P, with yarn held in back of work, K 2, slip 2 repeat across, ending with K 6
Row 19: K
Row 20: As Row 18
Row 21: K 6, * increase in next st, K 5 * repeat across, end K 5 (132 sts)
Row 22: K 4, P across to within 4 sts of end, K 4
Row 23: Work row in K and buttonhole same end as in row 3-repeating buttonhole every 11th ridge (for larger size do 2nd buttonhole in row 27, having a buttonhole every 12th ridge)
Row 24: K 4, P across to within 4 sts of end, K 4
Row 25: K 6, inc in next st repeat across, K 6 (150 sts)
Row 26: K 6, slip 2 as if to P, with yarn held in back of work, K 2, slip 2 repeat across, ending with K 6
Row 27: K across (larger size: 2nd buttonhole in this row)
Row 28: As Row 26
Row 29: K across (For larger sweater do another increase row here: K 7, inc in next st across, end K 6)
[B][COLOR=#0000ff]Work even[/COLOR][/B] in stockinette stitch with garter stitch button bands for 2 (6) rows. This will leave you on the WS, ready to place the markers.
Place Markers (WS): Work 26 (30)sts, place marker; work 26 (27) sts, place marker, work 46 (54) sts, place marker, work 26 (27) sts, place marker, work last 26 (30)sts.-(150)(168) sts total
Increase Row: K to within 2 sts of marker, increase in next st, K 1, pass marker, increase in next st; repeat between *'s 3 times (8 sts added)
Next Row: K 4, P across to within 4 sts of end, K 4
Repeat these two rows 4 (5) more times. (190 )(216) sts, putting sleeves on holder on the last (WS) row. Count ridges. 3rd buttonhole is coming up!
Next Row (RS): Work to within 2 sts of marker, increase in next st, K 1, remove marker, CO 4 sts under arm, remove marker, increase in next st; work across the back and repeat between stars (130) (150) sts
Work even, keeping button bands and working buttonholes where needed.
Work additional decorative rows (see rows 10-13) near the bottom of the sweater, incorporating 5th buttonhole in garter stitch border, to match neck.
[B]Sleeves[/B]
Pick up stitches of one sleeve plus 4 sts from cast on underarms, on 3 dpn’s. Join yarn at underarm and work stockinette stitch (all K) to 1 1/2" short of desired length.
Decrease evenly in last round of K, leaving 36 sts on sleeve.
Next round: *P 2 sl 2 with yarn in front; rep from *
K 1 round
Repeat last 2 rounds.
K 2 rounds.
Decrease 4 sts in next round, leaving 32 st.
Switch to garter stitch (P 1 row, K 1 row) and work to match neck.
Cast off in P loosely.
Repeat for second sleeve.
For a plainer boy’s sweater, you may omit decorative row and end cuff with garter stitches only.
http://www.knittingonthenet.com/patterns/babysweyokecard.htm