I think your hair is really hot and doesn't make you look younger. But, if you really want to change your style, I think you should try a nice clean cut look. You face structure is very strong so a nice short cut would enforce your jaw line as well as the rest of your face. If you don't want to go too short, you can try a medium length and go straight - try spiking it up? I am not so sure you'd like the idea of your hair spiked but its just a suggestion. Maybe check out the following link to help yourself find a good hair cut:
link If you prefer to not cut your hair, then maybe go with a little bit of a shaggy look with your natural hair by straightening it or applying gel. Anything you prefer to spice it up. Goodluck.