DIYs are the easiest and most basic ways to add personality to your clothes. Whether it's bleaching, ripping, studding, paint splattering, dyeing, etc. the finished product will always have a sense of personality because you made it yourself!
DIY bleached denim vest
DIY ripped jeans
DIY studded (and ripped) shorts
DIY paint splattered jeans
DIY dip-dyed denim vest
DIYed clothing helps to show your personal taste and style in a way that nobody else can imitate. I love the fact that DIYs never turn out exactly the same each time, so no one will ever have the same thing as you.
Another thing you can try is putting little pins, on your vests, jackets, shirts, etc. Pins that are cute, make you laugh, or say things that mean something to you add uniqueness or quirkiness to your outfit.
Try putting together an outfit where every piece shows an element of your style or means something to you.
Example: A quirky printed scarf (indie), a basic white top (classic), a pretty floral skirt (girly), a fierce leather jacket (edgy), your mother's luxe leather bag (boho), those cute little earrings you got during your unforgettable trip to Paris, and your go-to heels that make you feel like a celeb (glam).
You can also try wearing a charm bracelet. If each charm means something to you, or if you make the bracelet yourself, the bracelet will tell a story; it will add instant personality to your outfit, and it looks very stylish!