I was wondering how to sew the curves and found this one on You Tube:
www.youtube.com/watch?NR=1&v=AoJuHOrOyWk&feature=endscreen
<http: www.youtube.com="" watch?nr="1&v=AoJuHOrOyWk&feature=endscreen">
Hope the link works! I'd love to try this but the template is $26, a bit steep to experiment with. I wonder if one could make a temporary template for a, say, 5" hst from plastic or cardboard to try it?</http:>