Who cares about what you think the dress symbolizes?
Who is the woman? Who is the man she is with? What are they connected to?
Those are the first things to get right.
The Golden Eagle is a bird of the steppes. It has been the symbol of the Kazakh tribes since ancient times.
Here is a nice picture of Aquila Nipalensis
https://www.pinterest.ca/pin/468937379919698373/?lp=true
So if this one is a moonchild, who fathered it 9 months ago and what do you suppose its purpose is. Look at how things would have unfolded if Hillary had won. What special job would the royals have for the 3rd child of the king?