Less seems to be more in window treatments today. There are many choices in the shop or the interior designer. However, many people prefer to have simple designs, from a pretty valance to quilted shades or decorative shutters. And then they blend in with a room, rather than overwhelm it. 

One designer explains that before we choose what model we would like to put on our windows, we have to think firstly the function. Climate always comes up as an issue. We as the homeowner perhaps need something to keep the cold out? Many people want their window treatments to help cold air from coming in.

We can do this. You can put the heavy curtain and make it longer 3 or 4 inches beyond the windows to seal the air off. 

Blackout liners are another option. They can cut out air and light. You can put a layer of felt between the blackout and the drapery fabric. This tailors the drapery beautiful. It also helps  soundproof the room from any outside noise.

So we can have the aesthetic and function in the same time.