Style and Fashion are dictated by the industry itself. If the fashion industry says that floral patterns are 'in' this summer, then they are. You could go out and buy what ever happens to be this season's latest trend, of course that leads to fashion disasters like the 80's (and you don’t want a visit from the fashion police).
The best thing you can do is
find out what work's
best with you. Find out what colours and styles best suit your own colour and body shape and go from there. When you have a look that fits, you will look good and feel more confident.
A really good way to find videos tutorials for hair and makeup is YouTube. Here is a favorite of mine.