Polka dots are fun, and cheerful.
If you are looking for a busier pattern then use smaller dot pattern, which may not be suitable for a small room. Larger dots patterns are less busy and more suitable for a small room. Polka dots are a fun and cheerful pattern but should be used sparely. Ideally use polka dots for a fabric on an accent chair or décor. The pattern does not have to be symmetrical and the polka dots can be grouped together or spread out or a combination .
Repeat the pattern for balance and visual interest. The number of colors used in the pattern will make the pattern be chaotic and busy. Neutral colors have a tendency to blend well with any furnishing.