As you can see here, looking dapper doesn't take that much effort. Try teaming a teal shirt jacket with a crew-neck sweater and you'll look amazing. On the fence about how to round off? Add a pair of grey low top sneakers to the mix for a more casual touch. Looks like this go a long way towards building your style as a young guy.
Teal Shirt Jacket with Crew-neck Sweater Smart Casual Outfits For Men In Their 30s
This combo of a teal shirt jacket and a crew-neck sweater is a foolproof option when you need to look dapper in a flash. Get a little creative with shoes and dress up this look with dark brown leather loafers. As you see here from this look, dressing maturely doesn't mean dressing like a grandpa.