Cute dress. The woman's pose is nicely done. The drapery lines are well done too.
The color feels a bit disjointed. I would suggest next time developing the color palette before going into coloring/painting the illustration. This can help you see which colors go well together.
Right now the colors are very isolated. you can for example use the blues a bit more in the shadows on the floor and use the yellows from the window for the highlights in the room more. This will help the colors in the piece feel more unified. Was that helpful?