Wondermommy, wrote a post on her blog about this pattern:
http://wondermommy.wordpress.com/2008/12/04/winter-frog/. You might want to check it out.
Overall, I really think that Sandi Henderson's Portabellopixie patterns are really great and easy for beginners to sew. I wouldn't hesitate to recommend her pattern to anyone. There might be some mistakes here and there, but like several people mentioned in other topics regarding Sandi's patterns, most of these mistakes are easily caught and corrected.