Elle Decor has an article on their website about mixing patterns.You can find if here. I want to give my own design thoughts on using and mixing patterns in your interiors.
We all have our own level of design balance. What is great for one person will be wrong for the next. I like using patterns. I like mixing patterns. This has to be done with thought, care and a sense of the overall design.
Don't hesitate to mix patterns. You just need to find your design balance.