Modesty is in the eye of the beholder. "Drawing the male gaze" is what you try to avoid if you're being modest, but it's an impossible hurdle because some men are always looking.
I think any kind of braiding looks nice and never looks immodest, imo. Hairpieces add beauty and elegance. I think just like all women's hairstyles haha. Tbh, I probably don't know what counts as immodest.