Don’t be afraid to mix multiple patterns. Wear solids, or small scale patterns, as a base for your bolder patterns (stripes, plaids, etc) and layer up with larger scale patterns. The farther away from your body, the larger the pattern should be. It’s believed that plaids and stripes don’t mix. Stripes pretty much go with everything, including plaids. As long as the colors look good, the prints will look good together too.