You can either look a the drawing in the book to sketch an approximate shape, using the offsets as guidance, or go just leave off those two forms as they will not make a big difference in the long run.

You can just use the offsets as is. They will provide a couple points of reference. You don't need to make the strips conform exactly to the form.

> I have been printing out the Guillemot forms from the offsets in Nick's
> book. I used a spreadsheet then copied the resulting graph to CorelDraw
> for scaling. Most seem to be fine, but I was wondering what others did
> with form 1/2 and form 16.5, which have too few numbers to make anything
> except something roughly resembling a diamond shape. On all of the other
> forms the plotted points were frequent enough that I could round off the
> straight lines to make the curve fair. The biggest problem is on the top
> of these two forms, where the graphs give me sharp points, where they
> should be round. Any suggestions would be appreciated.

> John