Manicure 
To dream that you are getting a manicure symbolizes fascination and allure. You want to be noticed and praised for a task that you have completed. Perhaps you are trying to communicate your creativity via some project you are undertaking.
Nail File
To dream of a nail file suggests there is work to be done before you can move forward in a situation where presentation is required.
To dream of filing down long nails indicates that attention to detail is necessary.
To be filing already too short fingernails shows a neurotic tendency to continue projects long after they are satisfactorily complete and ready to present.
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