You are doing a GREAT job!
I've made two of these. Hang in there. The first few repeats are difficult, but then you get in the routine of it, and it starts to fly.
I recently bought the lace blocking kit from Knit Picks. I used it to block the dishcloths I recently made (as practice). They are great! I highly recommend that you purchase something like this. Branching Out is hard to block (tedious). You'll get a straighter edge that way. I sure wish I'd had this kit when I made my own scarves.