I'm no professional stylist or fashionistas, these are my own tips ^ ^ :
Tip 1: If you are wearing simple outfit -more like some dull colored- (Valentine day~ people generally keep the 'RED' on!! ) so to keep up with that :
I suggest for a pop of color, best way 'd be just add a red lip, simple isn't it? :) Not only is a red lip insta-glamour, but it’s also the perfect way to look festive without going over the top. The picture shows it!
Tip 2: If you are wearing jeans:
To spice up with the Valentine look, hot pink or red skinny jeans are just perfecto! :) And yes! to give the 'whola' look.. keep rest of the look neutral by wearing white/ black or gray ^ ^
Tip 3: If you are more into dresses:
I suggest simple and elegant dresses, not necessary red but keep the touch of red. Nothing should be over the top! ^_* Just be yourself!
Hope these were informative.. ^ ^
Happy valentine day!!