Ask a contractor about the windows first. His estimate for replacing them will be free and they can give you an idea of the expense involved in moving the locations of existing windows. The cost of replacing windows is usually small compared to the cost of moving them. The decorator will not know if moving the windows is even possible or within your budget and they will be charging you for their time. Once you get a handle on the windows then look for advice on decorating, and paint colors etc.

If you need new window treatments often the salespeople that sell them and curtains and valances are interior designers, have great opinions on colors, and will help you coordinate colors if you are buying their products.

HI -- Always go to the expert of said particular item -- window contractor for windows and doors -- window coverings - drapery person - but could also be interior designer but might cost extra - depends on sources. Kitchen and baths - kitchen designer . But this all could be under the guidance of an interior designer and their sources and commissions etc.