Help modelling complex shape I am trying to recreate this  in blender, and do not know where to start. The main difficult part is the top curved object. I tried extruding some sides of a cylinder and then shrinking them down like this  but I couldn't get any further. I am relatively new to blender, so all feedback, tips and tricks would be greatly appreciated!

Thanks, Dan.
You should first draw its profile, here are 2 ways to do it (among many I guess):