1, She would shimmy and cuddle inside it = it covered her face closely. 2, so that practically all you saw of her face was her nose = Her hair hangs down over her face so that all you can see is her nose. 3, Good luck playing four-square with a blanket over your head = It is difficult to play Four Square (a popular playground ball game) without being able to see well because of a blanket or lots of hair on your head.
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