Let me see if I can get you the pattern. It was free on Ravelry, but I think she has a website or a link for a PDF file.
Yes, here's her website: http://kodymayknits.blogspot.com/2006/10/kmays-eyelet-lace-elegance-hat.html
To seam it up, I followed Amy's video here: http://www.knittinghelp.com/videos/knitting-tips under Finishing techniques. It's the mattress stitch. I am NOT a sewer, so I was worried, but honestly, I can't see a seam at all! With that variegated yarn, I was worried that it would show, but it IS invisible!!!