I wouldn't say it's small for you… You're just limited on what you can wear it with. But all in all, it looks damn good on you, Bro! Glad you're enjoying it!!!
This is how I would have chosen to wear it regardless, just over a tee… Looking forward to warmer temps as being able to use it as a middle layer between a tee and a denim jacket or shirt is one of my all time favourite combinations.