I am not sure if you have some trouble changing your style from a student style to a more professional work style, but I do. I have learned a lot about how to dress professionally and stylishly at work. A blazer is always the first choice for dressing formal; however, sometimes it can look boring. I chose to wear a more classic blazer in navy schoolboy with jeans and a t-shirt. The blazer is more cropped so it doesn't make me look shorter.
J Crew classic schoolboy blazer in navy (,size xxs, on sale now, also adore this), J Crew linen baseball tee in lovebirds, J Crew toothpick jean (old, current version), Banana Republic Ivonne pump (in nude/black), Kate Spade New York 2 Park Avenue Beau (old, current version), Warby Parker glasses (ROWAN in Whiskey tortoise).