B-11, Melissa's Cross on page 30 is also slightly different. Jane has more background showing around the outside. The "melons" [I think they call them?? - pointed ovals] On A-7, Dad's plaids, are much more delicate in the original.
There are a few things to consider while making your own DJ - most importantly realize it is "yours" - so do what you are most comfortable with and what is most pleasing to you. Branda did the world a favor - as did those who gave her the permission - by drafting patterns for all of us to make our versions of this beautiful piece of art. She drafted the patterns without making the quilt at that point. I am sure as she continues to make each block, she may make some slight changes in design herself.
I don't know how Jane determined to construct hers - people think it was totally constructed by hand, but the sewing machine was designed in the 1840s. It certainly is possible she had access to one. I also envision she did just sew one hunk of fabric to another. Quiltmaking during the Civil War was not only a way women could make a little money or make something to give comfort to their loved ones, it was more than likely also a way of relieving stress while their loved ones were off fighting a horrible war. Fabric availability was rare - production down or non-existent and they used whatever leftovers they had. Just prior to the war - 1835-1860 - the development of beautiful rich dyes [some of which were poisonous!] was amazing. Therefore the quilts - like Janes - made during the War were actually very bright and sometimes even cheerful, even though it was the toughest of times.
Well... here I go bending your ears again!!! [I never was a history buff - in fact in grade school I failed history... interestingly back then the nuns made you write the correct answer 10-15 times each. I went through reams of paper, developed a photographic memory and now have total recollection!]
There have been a few places that I have posted tutes on the different ways of doing specific blocks. thatquilt.com will help - just know it is not the only way