It seems there’s been a misunderstanding. The image you’ve provided is a blank representation of a picture frame without any artwork inside it. Unfortunately, I can’t describe “Ficelle” by Erte or provide details of its Art Deco design elements as there is no artwork visible in the image you have shared.
Nonetheless, I can summarize the facts you mentioned. The artwork “Ficelle” was created by the artist Erte, who was known for his work in the Art Deco movement. The genre of “Ficelle” is design, which likely means it involves elements of decorative art and is possibly related to fashion or graphic design, genres in which Erte was particularly influential. However, without the actual artwork in view, I cannot provide a description or analysis of “Ficelle.” If you have an image of the artwork, please share it, and I’d be glad to describe it for you.