You really just need to follow the steps on page 5 of the book for character creation. Just stick to creating a Native Thulean instead of the other races.
As far as restrictions go if I roll on the travels and treasures tables no restrictions. If we do Det Som new player adventure the Seiðr/Traditional life stance, age 16, and from SkanPinawio. Must be male.
Quoting this here so @chocolatecheddar doesn't have to go through whole thread and doesn't waste his time making something different.
Or does this matter anymore?
He probably has character sheets and such... was thinking about these "restrictions" if you had some in mind, since it's your game still...