Ask the question: Is it okay to put a rug on the floor over a wall-to-wall rug? To a group of people and you’ll probably get a much-divided answer. Furniture and cheap patterned rugs are generally a very personal thing, and what works for some will not work for others.
Should you or shouldn’t you?
Apart from the more obvious reasons: you are renting, or otherwise, you are not able to change the carpet, your carpet shows signs of wear in the areas you would like to cover, etc. do it if you want. Carpets are a wonderful way to bring new life into space. They can add a touch of colour or texture in a way that does not require a total revision of the room. The options for carpets are practically unlimited. You can even make your own custom rug out of the vast warehouse.
The rules for …