What is on the floor? Is that little square of pattern your curtain material? Have your curtains or floor patterned, not both. Have contrasting lamp shades. Cerise and grey go well together. Put two small matching curtain/ wallpaper cushions on the sofa/ chairs, and then a cerise throw on the back of one sofa. A couple of sparkly cerise cushions added to the sofa and then a couple of nice scented cerise candles. Grey, cerise and silver go well together. You haven't really given me much to go on. You always start with the floor. Dark carpets always make things look smaller. Very muted colours are in at the moment. All the pastels. Bright yellow is also on the way back. Go to Ikea and look at their rooms. They are always on trend.