Diagonal garter stitch scarf

I knitted a diagonal garter stitch, which I found here, to donate.

I used a Caron Anniversary Cake Special Edition (the colour is Jewels and Jolly) and 6.5mm needles. It's about 4 feet long.

Cast on 3 stitches. 

First Section - increases:

• Row 1: KFB, knit to end, KFB.
• Row 2: Knit all stitches.
• Repeat rows 1 and 2 until there are 23 stitches on the needle.

You can adjust the width of the scarf by knitting more or fewer stitches. The finished edges of your beginning triangle (the two edges that do not have live stitches) give a close indication of how wide your scarf will be when complete.

Middle Section - main length of the scarf:

• Row 1: KFB, knit to end, k2tog.
• Row 2: Knit all stitches.
• Repeat these two rows until it's the length you want.

Final Section - decreases:

• Row 1: Ssk, knit to end, k2tog.
• Row 2: Knit all stitches.
• Repeat these two rows until there are 3 stitches left on the needle. Bind off.