Hmm ok, in the earlier picture you have a light sun tan, which suits you.
Also, your hair is shorter and more of a style, which again takes years off. It has more shine (possibly due to the flash) and seems a little lighter. It suits you around the jawline, your jaw is a lovely feature 
The earlier pic has more colour - warm skin, pinkish lips - whereas the recent pics look like you live in monochrome!
So I would say:
Hair cut shorter to frame your jawline, more height on crown
Lighten the colour, shine conditioning treatments
A bit of that lightly-tanning moisturiser to build up a gradual tan
Mild glycolic treatments to enliven skin maybe? Your skin looks good but might help
Wear brighter colours, introduce a bit of subtle colour to your lips/cheeks, something fresh and pinkish rather than glam
Avoid wearing too much eyeliner under the eyes, can drag the face down (definitely watch Lisa Eldridge's videos on her website, they're fab, inspiring & v soothing)
You don't have much work to do! Sleep and fun will have the biggest effect. You look more relaxed in the earlier pic, wide-eyed, energised. That counts for a lot.