I personally find this very emotionally symbolic. Kids will grow & no matter how far they grow (implied by the baby reaching) their loved ones with always be with them (indicated by you holding Vincent). The physical contact with baby Vincent & mother as one reinforce this, the bond between mother and child.
I know that this may seem to be just your typical photo, but I genuinely don't see it that way. This is one of those priceless/hallmark moments.