WIP: New Look 6150 Wrap Shirt Day 3 & 4

カーディガンが出来上がったところで、赤いカットソー作成に取り掛かりました。
・・・が、しかしっ！制作手順の意味がわからず、とりあえず今晩はここでギブ。

Huh?

Now that my Newcastle cardigan is done, I am back to New Look 6150 wrap shirt project.
I know, I'm supposed to go back to my McCall's M7014 jumper, but I need to iron my lining so that will have to wait.

Anyway, so the wrap shirt.
I cut the fabric and started sewing... And I just don't understand the instruction #4 and I'm stuck. I know I've read somebody explaining it in a blog or Pattern Review while I was researching on this pattern but I just ran out of time for tonight.