One way to mix patterns is to stick with a very simple color palette. While the curtains, rug, pillows and bench at the end of the bed are all a different pattern, they work together because they’re all grey and white.
Love the couch! Low this lighter tan/neutral sectional. Blue accent lamps on a couch table behind link to the dark blue throw pillows, industrial coffee table, neutral colored rug, nice large uniform picture frames as wall art, average sized living room