I often see this look and have the hardest time achieving it. The best way to do it is with two thinner pieces, or tops that can fold easily without getting too bulky. Start by pushing the cardigan up just beneath your elbow, then do a “J.Crew” roll (as seen above).
Kim Rogers Women's Plus Size Roll Sleeve Open Cardigan - Harbor Navy - 1X
SIMPLE SHIRTING: Madewell's 'Courier' shirt buttons at the back - it looks so cool left partially unfastened over high-waisted jeans or pants. Made from cotton, this piece has a boxy, loose cut and rolled sleeves.