[color=red]Dec on st at each end of next and foll alt rows until 8 sts remain,[/color]
ok, let read it again, in english (not in knitting instruction english, but real english!)
Decrease 1 stitch at each end of the next row, and on each following alternate rows, until there are only 8 stitches remaining.
And now, again, with important parts highlighted:
Decrease 1 stitch at each end of the next row, and on each following [color=red]alternate row[/color], until there are only 8 stitches remaining.
Real english is a lot easier to read, and make the directions clearer, doesn't it? (it take years of practice to 'read' knitting abrieviations!)
and while the instructions don't say so, you will find it easier to seam if you:
*K1, K2tog, (knit till 3 stitches remain) SSK, K1
(wrong side row)
This creates a smooths selvage edge (to seam).