Here's the process:
Step 1: I decided how long I wanted the scarf to be, then I added 12" because that's about what I lost when I tied the knots.
Step 2: I cut all the yarn I wanted in my scarf to equal lengths. (this doesn't have to be perfect since you will trim the ends even) I just eyeballed it as to how many peices I wanted. I would guess that I used about 50-75 strands total, but it would depend on the thickness of the yarns you choose.
Step 3: I knotted the entire thing in the middle.
Step 4: Here's where I changed it up from the original. I sectioned one side into 3 equal-ish sections. Then I braided 2 of the 3 and left the 3rd section as loose yarn.
Step 5: I knotted the side that I had just braided in 2 spots. Approximatley 1/3 of the way down and 2/3's of the way down. Just knot where ever it feels right to you.
Step 6: Repeat steps 4 & 5 on the other side.
Step 7: Cut the ends so they are even.
Finished! Super easy and probably took me less that 15 minutes. The finished product is being modeled by Kyle, my adorable 5 year old daughter.