Hi Liesl, I was interested to see that you place the interfacing on the undercollar, rather than the uppercollar of the Jump Rope Dress. I haven't sewn collars from many other commercial patterns and was wondering if this is common. Was there a reason why you put it on the undercollar - from either a construction or aesthetic point of veiw? Just thought I'd ask as I learned a lot from your other tips scattered through the pattern directions. Thanks