URGENT: 3d Scan of organic Object to Fusion 360 - Live

Urgent to be done in next few hours

i have 3d Scan of an ancient Roman Amphora. i need to design an accurate base for it to 3d print.

i have been unable to get an accurate model into Fusion 360 from which i can perform an accurate cut command to make an imprint on a base.

WHAT I NEED:

1)screen share with me on my system;
2) show me how align the 3d scan to the perfect orientation;
3) show me the workflow to be able to get it into a solid feature on fusion 360 without ,osing accuracy of the bottom of the object (its broken and jagged etc)

My system:

i have Fusion (paid for) with design extensions
Instant Mesh
Blender
Meshmixer


I have tried and been able to use fusion to turn it into a solid but with a lot of loss of accuracy

MUST BE TODAY