The contour of your forehead is not abnormal but your high hairline has given you a large forehead. I suggest you consider a forehead reduction using the Irregular Trichophytic Hairline Incision technique. Place your long hair over the top of your forehead so you can see the improvement that would be achieved with this procedure.
I would want to see your entire face in profile to see the overall proportions. From such a view, I might recommend a forehead reduction to move your hairline a bit lower