I love the idea of earrings being different, but do strive to keep them complementary of each other. Here are some tips for working with asymmetry:
1. Use a bead or two that are the same, or scrap of fiber in each one.
2. Keep the colors complementary.
3. Try keeping them the same in length or width.
4. Keep a unifying element in each that attracts the eye.
So, grab some head pins, stack some complimentary beads, fiber, fur, spacers, etc. on them and finish it up with an eye and attach ear wires. You get the idea. Have fun!!