When choosing accessories, stick to one large, statement piece. Dangling earrings, a big necklace, and a chunky bracelet give the eyes nowhere to rest. If you want the focus to be on your necklace, wear studs in your ears. If you don eye-catching earrings, skip the necklace altogether to avoid looking too "busy."
Accessories are your best friend. You can take any old outfit that would be quite boring or plain on its own and dress it up with amazing accessories. Add the perfect necklace or brooch to a little black dress, and you've taken that LBD from average to awesome in two seconds flat.
With everything that you learned about fashion today you should feel a lot better about how you look every day. There is a lot you can do to improve your image and to make people look at you a few times as they pass by. Best of luck impressing people with your fashion sense.