Combining a shirt jacket and a dark green shawl cardigan is a fail-safe way to infuse your closet with some masculine refinement. If you're clueless about how to finish off, a pair of brown leather casual boots is a never-failing option. Can you see how extremely easy it is to look dapper and stay snug when colder weather comes, thanks to this look? As you're heading into your 30s, you want to start dressing like an adult. In this case, inspiration like this comes in very useful.