Fashion is what you buy. Style is how you use what you buy. Fashion photography usually captures fashion in the best manner possible. There are people who have specialized in fashion photography retouching in LA.
There are photographers who are generalists and there are specialists. It is good to specialize in a particular niche. You can specialize in fashion photography. You will have to practice for many years before you become a fashion photography expert. The secret of success is constant practice. When you practice, you become better. Practice will improve your photography skills.
You will not automatically get the perfect shot on the first try. You might have to try many times before you get the perfect fashion photo. A photographer should be patient and resilient. You should not hurry photography. You should execute photography in a slow and unhurried manner while carefully observing your environment.