God demonstrated the first example that sin could only be covered by innocent blood being spilled. .It was a foreshadowing of Jesus’ sacrifice. . God could have as easily made clothes from cotton, silk, or nylon.
God made clothes instead of giving humans fur.
This was done to cover the nudity that humans had learned to distinguish as possibly sexually appealing after sinning.
This nudity should be reserved for the spouse and nudity should not be displayed to anyone but the spouse! A figurenude is the least sinful presentation of the human form but violates the sanctitity of the nude body.
Looking at nudity usually violates the sanctitity of the nude body.