Curtains can help the following problems:
1. Small window – extend the rod beyond the window frame. This will create the appearance of a larger window. More light will filter through the opening.
2. Large window - Attach your rod in the normal position. Try using tiebacks on the curtains. Use a valance.
3. Short/Tall windows - For short windows attach your rod above the window frame. Taller windows will appear shorter if you use a draped valance. It will soften the window.
4. View – If your purpose is to hide the view, match the window color to your wall covering. It will reduce attention to the window.
Today there are so many choices - Vertical blinds, miniblinds, wood blinds, shades of all types. You can keep it simple or layer the materials. Investigate the choices before you finish your room. If you give this some forethought, you can design your area to allow for changing window dressings each season.