Another idea is to find some larger frames and place them on the wall. You can see how the style works in the photo above. Again, you will want to focus on the contrast. Bright orange and blue have a strong visual interest.
The photo above also shows how well these elements can be matched to other elements of the room, such as the branches coming out of the vase. One of the vases reflects the blue shade of the frame on the right. The orange frame also has a shade reflected in the pillow, so the two frames fit the space well.