Hi Andrea - judging from that image, I’d guess the shape is quite a bit less ‘swoopy’ than you have set out with your curves. It looks rather more manageable, to me, in that it looks like there is a clear distinction between the sides and bottom, with some sort of fillet between. The Front-Bottom also seems like a simpler transition.
this looks like it could be a fillet-like surface and the front relatively flat:
this looks like it can also be a fillet like transition and the side surface relatively flat:
this can also be a fillet-like surface, I think:
But the main shape surfaces are relatively simple, is how I am reading this.