I wouldn't go that jumbly. Mirror seems nice, but looks a little pale -- a black frame would work wonders. Is the only color in your room coming from the curtains? I'd either pull that color in somewhere else in the room (vases. cushions, whatver) or change the curtains to something lighter/more neutral.

I used this drawing as a reference when decorating. Curtains, pillows, and trim of rug are navy blue as are the vases and candlesticks on mantle. Other pillows are reddish pink and so are the candles.

http://honeyandfitz.com/2011/08/02/how-to-decorate-a-mantel/