Try shorter hair to balance the jaw with layers and color accents to achieve width through the forehead and temples, and most importantly, off-center parts. By wearing styles which create emphasis at the temples and taper at the jaw line, you achieve a balance which can be remarkable. Try tucking hair behind your ears as this will draw attention to your eyes. Wedges and shags look great.
Avoid center parts, height and color accents that draw attention to the crown, and long full hair which will draw attention to the jaw line. If going with long hair, it should be kept tight at the nape.