This is my PPB.
I searched a technical fashion drawing without colors on it.
I also found a fabric pattern from internet.
And then opened them, also used the polygonal tool to select the part of the technical drawing, which I want to fill the fabric pattern in.
And then I renamed the fabric pattern as"pattern 1"in order to recognize easily.
Then I made my chosen part of the pattern into a square and it was symmetrical.
The same important thing was, don't forget to create new layers during editing.
I selected the part of the garment image and filled in the pattern, and I scaled the size of the pattern, so it can change the color, the size of the spots on it, these made my print proposal board.