All I did for this cake was bake 2 red velvet cakes, sliced them both horizontally and then used buttercream to stack them. I cooked another red velvet cake, but in a smaller pan and placed that on top.
I then iced my entire cake with a ‘crumb coat’ and let that sit for 10 minutes.
I made a double batch of buttercream and divided it into 4 bowls and died them all blue, starting with the darkest and ending with the lightest.
I used this tip and piped around, starting from the bottom and working to the top.
Then I just mixed gold and blue sprinkles and added them on top of the cake. I cut out a cross and a dove out of fondant, and stacked them on top, and ta-da!