I follow multiple fashion blogs on Blogger/Blogspot. All I can suggest is that there is no such thing as a fashion blog. It all depends on what you want to showcase and how you want to showcase them. Can you have your own personality and style even if you wear the same thing most others do, shop at most of the same places others do, and wear things the way most others do? Absolutely. Standing out is about expressing yourself and your views in your own way. Some fashion bloggers even post about certain deals online from retailers (especially those who have sponsorship). Some simply post about fashion shows and other things. Some post fashion and food, but I never know what is the real connection between the two.
I mean... there's no real way to make a fashion blog as far as what makes a great one is concerned. Just be yourself. Just express fashion the way you want to. Everyone has their own way of doing things. Even in my own blog (which is not under any category besides "personal"), I discuss fashion from time to time with my own thoughts. Maybe I don't pull the trigger on posting anything I know is going to upset people, but I do what I can to offer my own opinions in my own way.
Just go start a fashion blog or make a fashion post in your own way!