This is the second lace project I have done. The first was Branching Out. I can't say it was hard, but I did have to unknit--a few times! The alpaca (one of my favorite yarns) was hairy, and the fibers stuck too much, making it frustrating to go back to fix mis-stitches.
I had a great time knitting it. I wouldn't say it was hard and I do recommend the pattern. I used a sock yarn and #7 needles, which made it turn out bigger than the pattern suggests. I like it that way!