It reveals ambition. Seeing yourself with an embroidered dress indicates falsehood and deceit.
Dream dictionary: Embroidering dream meanings
Fond of finery, ambitious, desirous of making a show.
If a woman dreams of embroidering, she will be admired for her tact and ability to make the best of everything that comes her way. For a married man to see embroidery, signifies a new member in his household, For a lover, this denotes a wise and economical wife.
(Crafty | Cunning | Embroidering) A craftsman who applies a mono- gram or embroiders a garment in a dream represents a cunning and a crafty man of knowledge. (Also see Embroiderer)
To dream that you are embroidering signifies your talents and skills. You have an ability to make the best of everything what comes into your hands.