One of the easiest painting techniques is to use painters' tape to create stripes. You can use tonal variations of the same color, or use contrasting hues for a bolder look. A horizontal band of color around the room creates a more tranquil feel. Consider creating several stripes of varying widths in colors inspired by your textiles.
For more texture and variation, try a stencil. You can purchase stencils of abstract shapes, or choose a silhouette of a bird, flower, dragonfly or something else that feels inviting. You can also cut your own out of cardstock.
For scenes with lots of detail, vinyl decals are a great option. If you find a set you love, it can inspire an entire design scheme for the wall; if you choose decals of farm animals, for instance, you could paint rolling green pastures and a sunny sky on the wall to create a fun, colorful scene.