Hands/Arms;
Skin colour to half way into Rnd 7, then team colours for the sleeves.

Legs/body/head;
Black for the shoes to end of Rnd 11, pants colour to end of Rnd 22, team colours for the shirt to end of Rnd 32, then skin colour for the head.

To avoid increase lines on the bottom of the head, I ‘split’ or stagger the increases like this;
Up to Rnd 34: As per pattern.
Rnd 35: 2sc, inc, * (4sc, inc) * repeat from * to * to last 2sts - finish the round with 2sc.
Rnd 36: As per pattern.
Rnd 37: 3sc, inc, * (6sc, inc) * repeat from * to * to last 3sts - finish the round with 3sc.
Rnd 38: As per pattern.
Rnd 39: 4sc, inc, * (8sc, inc) * repeat from * to * to last 4sts - finish the round with 4sc.
Rnd 40 and beyond: As per pattern.
So - the pattern hasn’t been altered at all!
You’ve simply moved the increases on all of the ‘even’ rounds and all ‘odd’ rounds remain the same.

I add a length of crochet braid around the neck to neaten/cover the neck join - choose one of the jumper colours for this.

Beanie/Hat

Start with 6hdc in a magic ring, sl st to join.
Change colour every round using as many colours as you need to represent your team colours. To achieve smooth colour changes, sl st with the colour that you were using, then work the ch1 with your next row colour and continue on.
Rnd 2: inc in each st around, sl st to join, ch1. (12)
Rnd 3: (1sc, inc) around. (18)
Rnd 4: (2sc, inc) around. (24)
Rnd 5: (3sc, inc) around. (30)
Continue increasing until you have worked the (8cs, inc) round, then continue on without increasing until your beanie is as long as you want it to be, then work two rounds of ribbing (1 front post hdc, 1 back post hdc) and finish off. Add a pompom.

Scarf

You will be changing yarn colour every row, so work over the yarn from the previous rows as you work (carry the yarn) - change colour when finishing the last dc of a row.

Ch 5, 1dc in 3rd ch from the hook, 2dc - change yarn then ch2.

Work alternate rows of 3dc + 2ch until your scarf is as long as you want it to be, finish off and add a fringe.