Avoid dark colors, gray and beige. It will make you look older. Ganun din with make up, no eyeliner on my lower eyelids, mukha akong matrona. If I want red, flashy lips, I'd lighten my eyeshadow and blush.
More than clothes, dapat consider na rin ang posture. I have the tendency to slouch, magmumukha akong may osteoporosis if I don't mind my posture. Importante rin ang pananalita (in person ha, not on line). Giving too much advice lalo na kung hindi ka naman tinatanong reveals your age at parang you're asserting your identity as the oldest in the group demanding respect.
Sa hair, shorter hair can make you look young lalo na pag may style. Consider mo muna kung carry mo.
Maybe I'll have a customized shirt that reads "Don't ask me my age!"