I don't know. If your intent is to stay clean and minimal, you're doing that quite well as it is. You don't really tend to do much with color, but that isn't necessarily bad if it's a deliberate choice. There are certain things you could do to accent otherwise subdued outfits. The last one you posted, for example, is fairly monochromatic: white shoes, white tshirt, grey tshirt, black hoodie. If you wanted to mix in something more striking, ditch the white chucks for your grey ones and wear a red tshirt accented against the grey tshirt underneath. You'd still get some of it under the sleeveless hoodie. Alternatively, you could mix in a separate monochromatic palette, like a dark brown longsleeve tshirt with a khaki tshirt over it. None of this is particularly complicated; about the only rule, if that term is even applicable, is that it's probably best to make the tshirt lighter than the long sleeve tshirt if you're pairing it with the black sleeveless hoodie (which you can swap out for a sweater vest or even a suit vest, if you want to start doing unusual things). There are plenty of other things you could do, obviously. You could swap out the multicolored beanie for a either a more fragile, fashion-y piece like a thin cashmere beanie or you could go the exact opposite direction and try a military surplus hat to go with the military style jacket (looks like it was modeled after Diesel's Jubetwo, though there's probably a real jacket with similar details I don't know about). You could, of course, try exploring more unconventional aesthetics if you wanted to, and speaking as a kid who is (as far as I can tell) a hell of a lot poorer than you, there are ways of managing that (mostly a mix of thrifting, learning to sew, eBay, and creative shopping). Not saying you have to; just that you don't have to spend more on an outfit with Demeulemeester, Diem, and Maltieri than I spent on my High Performance Civic.