Since I saw the other topic of you, asking what a valley and mountain fold is, I assume you know the defenition of them.
In the diagram:
The mountain fold is shown by a dash-dot line
and
The valley fold is shown by a dashed line.
Fold those ones right,

I colored the Mountain folds red for you and the valley folds blue.
Now try it with the photodiagrams of Brimstone.
If you cannot figure it out, begin simpler. You need basic knowledge, else you will get trouble in difficult models.