Classy and attractive style Windowsills could be very functional, for decoration and storage purposes. If the windowsill is big enough, then you can transform it to a seating space. All you need is some decorated cushions with flowers and soft curtains. The most common use for windowsills is placing plants and flowers as a great aesthetical and functional solution. You must check the way plants are decorated according to size and colour and there must be consistency between pots, flowers and window shapes. Sills can also be decorated with stained glassware, candles, seasonal or holiday centerpieces and decorations, mirrors, figurines, framed pictures and souvenirs. The key to a stylish windowsill is to adopt a main theme in an elegant way.