Juliana Willoughby stands quietly but alertly, engaging the viewer with her direct, slightly questioning gaze. The blended harmonies of the pinks, whites, and creams of her skin tones, her dress, and her shining wisps of fine hair evoke not just Juliana, but the essence of all little girls of this age. The dramatic diagonals of the landscape, the energetic brushwork of the trees at the right, and the strong coloration of the sky provide a dynamic backdrop for the young subject.
Romney's sure sense of formal values is evident here in the effective balance of figure and landscape. In this portrait Romney successfully adapted his composition to a change in the sitter's costume, X-rays show that Juliana originally wore a small, brimless cap. During the two years it took Romney to complete the portrait, Juliana, who was by then almost six years old, had outgrown her mobcap and wore, instead, this broad-brimmed bonnet.
Like many of his contemporaries, Romney traveled to Italy, where he spent two years studying the work of Renaissance masters, in particular paintings by Titian and Raphael. The impact of these artists on his work can be seen in the simply expressed folds of Juliana's dress, the case and certainty of his outlines, and the artful balance of broad areas of color.
More information on this painting can be found in the Gallery publication British Paintings of the Sixteenth through Nineteenth Centuries, which is available as a free PDF https://www.nga.gov/content/dam/ngaweb/research/publications/pdfs/british-paintings-16th-19th-centuries.pdf