A characteristic feature of the French style in a room is the glazed door; this concept is transferred in a bedroom to the window. If you want to get off to a good start and agree to make greater adjustments.
Delicate tones of the pastel colors in the French decoration look for two things: An environment rich in lighting during the day (hence the window is so wide), and a warm atmosphere during the night, something really cozy that invites you to sleep and the intimacy. However, do not forget the main advice and base your tones using those provided by the Toilé de Jouy decorations, there are many soft colors.
Then this is the breaking point that will make a French decoration look beautiful as it becomes an authentic 19th century French decoration. If you removed all the furniture in the room, fabrics, colors, and other things leaving the bedroom canvas blank where only the available space and a large double wing window stand out, you will practically have half the work done.