Nasal shape with a straight dorsum
JamesDean's photoshows a very ideal male nasal shape. The important components are the nasal tip is higher than the dorsum, the dorsum appears fairly straight with a slight depression or curvature at the nasal base at the forehead.
You have a very masculine nasal shape. Based just on the profile photo, I would recommend against any procedure to alter the shape.
The picture demonstrate a gentle curving slope at the beginning of the central brow. This area is referred to as the dorsum and there is a slight concave shape.
The nose pictured has a dorsum with a slight concave curvature. There is a subtle supratip break that separates the tip from the dorsum. The skin is medium thickness.