One of the quickest, simplest and most affordable ways to transform the whole look and feel of a room is to change the window treatments. This is something you can do yourself in no time at all, and the visual rewards are instant.
Whether you buy curtains or blinds ready-made or have them made to fit, you need to measure the window and its surrounds accurately. If you are having curtains made, the amount of fabric required will depend on the style of heading you want, but also on the length you choose - you have absolute flexibility here.
You'll also need to decide whether to opt for a pole or track. Go for a pole if you're happy for it to be seen, but if you'd rather it be hidden, you're better off choosing a track. Fixing either a pole or a track is fairly straightforward, and is certainly something that even a novice DIYer can successfully attempt.