I learned to love a calm, uncluttered bedroom the way I learned to braid my daughter Rosie’s hair on Saturday mornings: slowly, with a little patience, and a lot of love. I’m a mom in my forties, proud of my American roots and the neighborhood where my parents and siblings still drop by with pie. My son Eli, age 10, has a knack for rearranging pillows; he thinks decorating is a new sport. My husband helps move furniture, and sometimes our neighbors trade plants with us. Those small routines and childhood memories shape how I approach home décor now: practical,…