It's finally starting to get warmer outside and the sun is out, I can't wait to start wearing spring clothes <3
But there is a couple things you should remember at this time of the year;
-After a long dark winter the sun can be pretty hard on your eyes, so wear a pair of sunglasses to avoid a massive headache and tiredness.
-In spring it's usually really nice and warm in the daytime but don't wear a light jacket yet, because when it gets a little cloudy or a little late, you're going to be freezing.

EDIT: Let this photo be an example not only on functional clothes in this weather, but also on trouser length and how your jacket should fit.