I made a 3D scan of one of my wife's sculptures, but I'm having trouble closing off the open ends. I want something sculptural (positive curvature in some places, negative in others), but how to close the shape for further digital sculpting?

I made a 3D scan of one of my wife's sculptures, but I'm having trouble closing off the open ends. I want something sculptural (positive curvature in some places, negative in others), but how to close the shape for further digital sculpting?

You could select the edges on the border using AltRMB
in Edit Mode. Press space to show the popup menu and type Grid Fill.

If you want the filled area flat you can scale the z-axis SZ0.

In order to edit a high poly mesh in Blender created by sculpting or importing 3D-scans usually retopology is required.
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