It doesn't work very well to make it with Network - you're trying to force the network through a lot of changes in shape. When you try to force one single surface construction through a lot of shape changes it becomes difficult to make things smooth, the surface is trying to do too many things all at once.

You should generally try to build surfaces that are more like one big sheet of one generally common shape to the sheet, then more tightly curved transitions between them are fillets or blends, usually not a part of just one single surface operation.

If you want to do it in a surfacing way you could try something like build a couple of different separate pieces and then use Blend between them.

Other things that can help with Network are - make sure you're using v3 because there have been improvements in that area, and try to make your pieces touch each other more precisely rather than having gaps and overshoots where cross sections come together.

It usually just does not work very well to try to build a surface that's going through multiple shape changes in one single surfacing operation though.

And also like I mentioned previously the more regular you make your shape can help as well, so you'd probably want to make it a bit larger probably with vertical profiles and then cut away material from the side.

- Michael