You should always re-clear the entire panel you are blending for maximum quality. It's hard to tell exactly what you did there, but from here it looks like you buffed it too much, or there was an inappropriate use of masking paper, or both.
You should prep the entire fender like you are going to paint the whole thing, lay one coat of intercoat down on the whole fender, apply base to the area which needs to be covered, making each coat go out further from the last, then clear the whole thing. The trick is in the technique used to create the blended out area of the base. It's sometimes hard to achieve a perfect transition from the repair to the existing metallic. The coat of intercoat helps a lot with this.