Hi David, 
> I'm pretty sure that is because of my main shape, and that's the core of my issue, how 
> do you build your main shape to be sure it will fit all your cut in any views.
 
So I guess that normally you would just not go about it in this particular way of trying to control a cut profile from 2 different directions at the same time...
 
Focus on one cut direction and on how to form the main shape.
 
> The bulge on the back and on the side are just here to say that it is not a primary shape 
> and you can't take a sphere and deform it, maybe you can/should?
 
It's maybe possible to deform a sphere but it's hard to get very localized features that way. It looks to me like you've still got a primary shape under that outline,  notice how there is basically a pattern that starts at the base and continues above the bumps, here I've traced it with red:
  
Try to ignore the localized bumps and just work on the non-bumped underlying full form. Try to build a base shape that matches that outline first before starting to get into cuts.
 
     - Michael  
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