I have now reached the first end of the scarf. Since I assumed that both sides of the scarf was to be mirror images I assumed that there was an error in the DEC RND 1 and made the SSK and k2tog at the same edge of the scarf in order to achieve the pointed end. I e-mailed Jennifer about it, but it turned out that the description is correct, although the end could also be knitted the way I had too.
I then went on to weave in some yarn ends and then (Ta-da!) removed the cast-on row (I've never done that before) and picked up the stitches and went on knitting. Everything went fine, but I must not forget to weave in the yarn ends before I reach the other end and start closing it up.