These are my drafting diagrams, from Rohr’s “Pattern Drafting and Grading- Women’s and Misses’ Garment Design.” 1968 edition. I can answer any questions, but once you get your hand in, you’ll see how it goes.
I used the octagonal circle skirt shown in the post on my Hemp Snowflake skirt. I simply offset the octagon so the front edge would come out shorter than the back.
The finished dress drafted using these diagrams can be seen at the Terra Incognita Dress post.