|There's a much simpler way to sew zippers than pinning, basting and praying. Stitchers rarely stop to consider this but zippers are an ENGINEERED product and designed to be sewn the way that manufacturers do it as they sew more zippers than anyone.
I know that home sewers are probably tired of competing information by so-called "experts" but all I can say is we've never heard of these experts on this side and regardless of the company, any professional manufacturer sews zippers this way.
For a step by step illustration on how to sew zippers professionally (industrial) complete with detailed photos, free template patterns and written instructions, go to my blog at www.fashion-incubator.com. There, you'll also find a lapped zipper application as well as many other INDUSTRIAL standards.