Multidirectional scarf question

[Cathybuck]

I hope I can explain my question clearly. I want to make the Multidirectional Diagonal Scarf. I've read everything I can find about short rows and think I understand how to turn and wrap, then knit back the way I came. But I don't get how you attach the new short row section to the first triangle, so the scarf stays rectangular instead of looking like two separate triangles. Patterns for these scarves don't say you go back and sew the triangles together, and don't tell you to pick up stitches as you make new rows. What am I missing? I'm sure it's not hard, but I just can't figure it out. Thanks!