The best way to do this as I look at my cast iron pan is as follows.
If there is symmetry always cut it in half. I.E. If you put a horizontal plane down the center of the handle is the top and bottom symmetrical? Its best to surface a symmetric feature and then mirror that to create the whole thing.
I have designed several hand remotes this way and it works best to do guide curves and section lines, kind of like when lofting the hull of a boat.