Copying the back skirt shell for lining

Hello Nehzat,

Please I need clarification. I am currently watching the Skirt Sewing from a Pattern Online Video i am on video 7. about 6  minutes into the video, you started to copy the back skir pattern to create the pattern for the lining.

I want to know if you copied the center back dart also, it was not shown in the video. Also about 15 minutes into the video you said "also to prevent a lining from getting caught in the zipper we need to push it back by 5 millimetre measure 5 mm from here" From where? Is it from the center back dart leg or from the center back line on the waist.

I am confused because I am not seeing the center back dart on the back lining pattern.