I'm not sure which one you're talking about, so I'll briefly discuss them both. The scarf is very easy. I'm a newbie lace knitter, so if I can do it, anyone can (I think). It's only 21 stitches per row and for purl rows, you always k2 at either end and purl all the ones in the middle. Also, this pattern has a very distinct stitch in every knit row--the double decrease (see pattern for specifics), so I've been kinda using it as a marker within the row, which really helps me keep my place.
As for the crocheted fitted shirt, it has been fairly easy, too. It's worked in the round from the yoke down using variations of one shell stitch. So far, it has progressed rather quickly with very few errors on my part. It's from Doris Chan's book Crochet Lace Innovations.
Thanks for looking and happy creating to you!