How about some lighting correction to really push the planes of the pic?
You have strong lighting coming from the window, and your character could be working in the shade (thus darker, soft shadows). The dress is lit in the background, with reduced contrast, which reduces how attention grabbing it is otherwise.
You can add a rim light, but the source is diffuse rather than a pin light so it would have to be subtle.
I think these values help the composition a lil bit. Keep it up!