Interesting! Genesis 1:27 states that God created mankind in his own image, in the image of God he created them; male and female he created them. However, God first created a child (Gen 2:7) because, I suppose, He wants us to see that all children have to begin their lives and learn.
Adam had a learning curve for sure! But he had a Father and a Caregiver (the Holy Spirit) to provide and care for him. I understand that Jesus was in the Garden of Eden, which we know as the Tree of Life.
God shows us part of who He is with His creation as a child. When the child aged enough to begin understanding the world around him, God separated His image into two perfect parts - male and female.
So first, God provides us with His image as that of a child, and then, He shows us His image as a creation of male and female that together can reproduce. In this way with the birth of each new child God's image is carried forward. In the beginning God shows us His image as a family - a family of three.
Jesus referred to God as Father. Jesus, is His Son. My studies shows me that God's Spirit is described in the NT as what I understand is a loving caregiver. The three are one which agrees with Deuteronomy 6:4 which says "Hear, O Israel: The Lord our God, the Lord is one.
Throughout the bible the unit of family is described with strength, and love.
Today, every one of us that chooses life through Jesus Christ becomes a child of God and our family relationship is that of three - a Father, a Caregiver, and a Child. In the eyes and understanding of a child in a loving family, we experience our parents love and provisions. Every loving mother and father can unconditionally love each of their children. For each child, the relationship is three.
So, in my understanding, God first shows us His image as a child so that we are able to understand our relationship with Him.