Hi Finema,

I have draw some Tangent lines to geometry in the sideview of the bottle(look at Dimensions 5mm-7mm). Then I draw some curves in the front view. After extrude them I make some intersections, to get curves for some Network, sweep ... (very classical method known from sign boards). Normally You have to have the top-view and sections also, to get better results. So you have to guess the form. But nevertheless it's an interesting object for experiments;-)

Have a nice day
Karsten