None of your links were working.
I know of a good guide for kirtles. I'll edit this post when I can find it.
EDIT: Here it is! http://medievalweddingdresses.ideasf...-gown-pattern/
Here's what you've got to keep in mind for clothing of the time period:
-Made mostly with squares, rectangles, and triangles. They wanted to use every bit of the fabric they could.
-They just wanted it to fit over you. They'd adjust things like size with belts.