The Significance of Garments of Skin in Genesis 3 Verse 21

Adam and Eve sowed fig leaves, skins come from animals. God providing garments of skin for them seems to imply they cannot cover themselves as they need to. That I think has both a physical but also spiritual significance because they cannot deal with the degree of their shame and vulnerability in a fallen world. They are inadequate in all their means to clothe themselves. And I think these are the seeds of what s flowering much later. Perhaps we have those early signals already foreshadowed with Adam and Eve.