A dress creates one large field of colour, so even a small accessory can change its direction. Begin with the dress alone and notice where its neckline, waist and hem already create emphasis. The most useful palette usually supports one of those points and leaves the others quiet.
Decide whether to extend or interrupt the line
Shoes close to the leg or dress colour lengthen the silhouette. A contrasting shoe makes a deliberate stop at the hem. Neither route is universally better. Check the effect while walking, because a fluid fabric exposes colour differently from a still mirror pose.
Use accessories as punctuation
A bag, belt or earring can repeat one note from a print without copying the whole pattern. With a solid dress, texture often adds more depth than a second strong colour. Add one piece at a time and photograph the result in natural light before deciding what is missing.
Plan for light and contact
Pale dresses may become more transparent in strong sun, while saturated dresses can transfer dye onto a light coat or bag. Test the intended underwear, outer layer and seat fabric. Follow the garment label and test stain treatment on a hidden area rather than rubbing a visible mark.