The style of cheap ready-made curtains your custom window treatments also needs to be considered. Your home style will determine this to some degree, but there will likely be some leeway in what you choose. There are so many options today, that it might be difficult to make a final decision.
Leave a TV or radio on (fairly loud) and keep the windows and curtains closed. If possible, turn on all the lights-that way there is less chance of her noticing something is happening outside.
When you get made to measure curtains you are getting curtains that fit your windows exactly. Not all windows are the same, and if you get curtains that tende per banche are too short, then people can see in. If you get curtains that are too long, then you just wasted money on fabric. This is especially true with curtains for bay windows. This is why you need custom curtains. So that you can have curtains that fit the look of your home, and the size of your windows, and make your decor look harmonious.
After that we moved fourteen more times, always to different countries, all over the world, without ever bringing any furnishings with us. Each time I went through the same process of sitting in the empty rooms, envisioning the results I wanted to achieve, then finding the right home decor. The results were always perfect panoramic glass curtains for that particular house.
So the first decision is will it be curtains or shades. Bay windows can look really good with custom made roman shades. They look smart and work really well when there is furniture to both sides of the window leaving little or no room to hang curtains. Maybe there is a window seat fitted. If this is the case then roman shades are a really good way to dress your bay window. If your bay is nice and clear all around then curtains are a good way to go. Especially long to the floor curtains. Long curtains really dress a window and give a touch of luxury. They also make the room feel warmer in the winter.
When purchasing made to measure curtains there are several other factors to consider. The first is how long do you want the curtain? Sill length? Floor length? Floor to ceiling? Or perhaps you are using a cornice or a valence with your curtains. This will determine the length but keep in mind...that is your preference so be sure you know the look you are going for. Designers will buy curtains that are wider than the actual window itself to make it look more substantial in the room.