Draw your design on a piece of graph paper. Determine where you want the pattern to start, whether it is a border, stripes or a stencil pattern.
Prep the rug by removing all of the furniture from it and vacuuming it thoroughly. Move the rug onto a plastic drop cloth so the paint won't seep through the jute and ruin the floor underneath.
Use a measuring tape to carefully measure your design onto the jute rug. Use low-tack tape to outline the borders for paint application. Apply a wide width of tape to make sure that your roller or brush won't accidentally paint something it shouldn't.
Roll the paint onto the jute rug using your painter's tape as a guideline. Apply the paint in an even coat, stepping back often to make sure the paint is uniform and consistent in color.
Allow the paint to dry completely, usually around two hours, before replacing the furniture.