Nice work on the American Melody, but use the standard 1000x385 template, please. (1000x330 is allowed when ship is not depicted below the waterline, but otherwise smaller templates are strictly not allowed)
I agree with you about the rudder shades, I'll correct it. But the shades of the bulge not so clear. The bulge has a form of cigare, inserted to the standart merchant hull. So it has sharp curves in places of contact with hull. So the shadows should be shown in these places and on the top side of the bulge, as drawn, I think.
Well, according to my understanding of SB shading style, the cross section of the bow shaded the way You did it looks like that: