Yorkshire Tweed Beret

I started doing a beret yesterday which I found on "One-Skein Wonders" (page 168). I'm now down to the edging part of the project but I can't seem to figure out how to work on those last few rows. Frustrating. I unfortunately have casted on very tightly too. Now I'm having a hard time putting the cast on back to my circular needles, as stated on the pattern. Arrrrgh. I really like this project done. I think the beret would look really nice. Thoughts?