Borders! There is a zig zag of rose, green, and blue in the panel. You could do a zig zag border with those colors. Or, under the pharoh there is a frieze that has diamonds or squares on point. A border like that using the rose, green, and blue for the squares and one of the earth colors for the background would be nice. Pick out another color from the fabric for thinner borders. Or use one color for the squares on the earth color and thinner borders out of the other two colors.