It's texture - and it's not texture - it's extreme mold making with 'fresco' style relief - be that as it may - here's the general idea; need the top inner frame OPEN, and the sides CURVED, and the BACK (bottom of the object) CLOSED. The case is hopefully a NETWORK CURVE so I have all the FLOW ability control - adjusting the size of the 'little boxes on the surface', and the case SURFACE comes up to and connects to the TOP FRAME outline... so the top frame INNER AREA is OPEN.

I've been struggling with this for a month! The answer would be to JOIN a NETWORK CURVED SURFACE one to another - that way I could make the sections UNIFORM and simply JOIN them to make ONE SURFACE for the purpose to NETWORK a surface.

What works is LOFT, to some extent, and then EXTRACT WIREFRAME, and then use that wire frame to NETWORK ontop of - which will work - however, I still don't get a 'soap dish' closed all the way around with the exception of the 'hole' opening at the top inside the top frame! Aaaaaaagh!

E.g., see attachment: