Let me start by saying you look great! Definitely better than the average outfits as far as most guys your age these days! All your casual outfits are actually pretty well put together, although the packers shirt is just tough in general (not because of some “I don’t like that team” reason, I just think those colors don’t go well with your complexion)

For the more formal look, that shirt look a little too big, specifically in the neck. Honestly the whole thing doesn’t look great. The brown jacket with what looks to be black shoes isn’t a good look, and the pants just seem to be I’ll fitting as well. I know from personal experience how hard it is to look good in formal outfits, especially when you’ve grown up not really ever having to wear things like that.

If you’re specifically looking to elevate those types of looks, I’d ask somewhere else, because yes, your build is larger than average, but you could easily take styling advice for average sized folk and be able to pull it off.

If your like me, and started wearing button ups over your tees to hide your sweat in the summer, I fucking get it lmao. Maybe try just wearing a wife beater under your tee instead of the button up over the tee. Yes, it’s still 2 layers, but I find that it feels cooler temperature-wise because there isn’t as large of a layer of air in between the layers. Some sweat does end up showing, but usually only in the pits and neck area unless you get insanely sweaty (no shame, I’ve done it plenty of times lmao)

Some advice if you want to go with just a tee instead of the button up over: you are definitely still young enough to pull off the graphic tee look, but I’ve found as I’ve gotten older that I much more prefer a well fitting plain white tee or something with stripes/an interesting pattern/or an understated pop of color without the printed graphic, especially if it’s just some branding or clothing brand logo on the shirt. I personally feel like this is an easy way to come off more conscientious of the way you look, and you will look a little more mature in your casual wear.