I need help with room decor?

so, im wanting to re-decorate my room, as a christams present from my parents, i love the bedding, and styles from anthropologie, but the quilts and accessories are really expensive. i love bringing in influences from nature(like birds, leaves, flowers, and trees) and jewel tones(muted, and bright) to create a very unique space. does anyone have any suggestions for wall colors(my favorite colors are purple and green) accessory ideas, or places where i could get things like the bedding from anthropologie, but less expensive? id appreciate it! just any decor advice is needed. (i would really like to incorporate a tree, or design of one somewhere)