Frenchy

Here is the 3DM file

I used loft->loose->exact.
Fillet was 2.5

If your looking to model organic shapes with some sort of precision then you would probably need to model it like Mauro shows.

Thx
Ok I see : I was in error by the miss-align of the top view generator curves and the Loft loose state for the Point at top flat align with an "external circle form"



and as your name's file says, the bottom fillet don't yet work ! (bug ? ) or your fall in the same case than my first post! ;)
And how you solve it ? In redraw another curves? ;)

In any case I prefer my method because you don't need to redraw any curves! :)
You can apply directly the vertical sections given!