Is there any ways whether its certain specific clothes or a certain style of applying makeup and such to make yourself look older?

Certain colors in make-up or clothing can do it as long as it doesn't look trampy.

The trick is to look mature and put-together, not provocative or overdone. Never try to look like you're wearing makeup--ideally cosmetics should just enhance your looks, not replace them.
And most importantly, although the idea is to try to look stylish and 'cool', only wear what looks good on you. Having a sense of style that works well with your personality and appearance is the main thing.

Honestly, I think femininity is ageless. As long as you look feminine and confident then people will assume your age.