Nicely done! The shading of the main dress brings dimension and nice tone points to it, so it's not just one flat colour throughout. The light blue lining of the hem and the bright lightning bolts also bring life to the dress, so it's not plain boring and displays the personality. The star in the mane and the star necklace are nice finishing touches, balancing out the outfit, which brings, overall, a very effective dress. My only suggestion is to balance it out with some bright shoes, either golden or sky-blue. Apart from that, it is a beautiful dress.