Cast on 85 stitches of the first color of yarn. Remember, this is knitted sideways, so the 85 stitches will be the length of the scarf, not the width. When all the stitches are on the needle, it will be a leap of faith to imagine how long this is going to turn out. Make that leap! The finished product will be too long if you add more stitches.
Knit 10 rows, increase number for a wider scarf. If you're using the recommended Thick & Quick, I strongly recommend keeping the width down, as this could become bulky!
Switch to second color of yarn and knit an equal number of rows (minus one row) as you did the first color. If you knitted 10 of the first, knit 9 and so on.
Your final row is the cast-off row. Cast off very very loosely or your scarf will curve on the cast off side. As you cast off, the length of the scarf will be revealed!
Tips & Warnings You can replace Thick & Quick yarn with multiple strands of mixed yarn that makes up for the bulk. This is a fun way to get interesting results and play with texture and color. It is also a great way to use up leftover yarn!