to prove how much the scales were a loosy job to the closed minds..here is the default map;
http://img99.exs.cx/img99/5248/jiji.jpgnotice the scale, pretty nice no? now look at pin's scale, they're only U-shaped lines, something even a children could do, but making realistic and beautiful scales is another thing.
i can easily tell doing million of U's all over the skin isnt the right way to do scales. pins, for your scale, you should do more than curved black lines, do some shading & lightning, since scales arent flat