Window shades are not only appropriate decorative window treatments, but they allow you to keep privacy from those outside. When purchasing custom size blinds or shades to fit your window can end up being expensive, but an easy option is to buy your blinds from the home improvement store and trim them yourself. Trimming blinds or shades are light, and take some time and material.
Pull up blinds or shade until they are as close to the track as possible. This will make trimming them easier to handle. Knock down each edge to keep them securely together, which will cut down on rough edges. Measure the inside of the window to determine how wide blinds or shades should be. Make sure you trim an equal amount of both sides to keep them looking as smooth as possible.
For example, if you have a window that is 40 inches wide and the blinds are 50 inches wide, you need to take 10 inches from blinds or 5 inches from each side. Mark the window shades with a pen to give you a guideline where to trim on each side. Lay the blinds on a stable surface like a table, one end hanging on the side. Cut off the edges with a jigsaw with a new sharp knife to avoid uneven cuts. Repeat on the opposite side and hang.