Here’s my technique for hammock nets. I make a folded paper template and cut some tulle slightly oversize
I put some weight (a scalpel is the right size and shape I find) to ensure the net conforms to the hammock cranes, then stitch the first vertical edge.
Then fold the top edge of net over and start stitching.
Then lock everything off with diluted PVA
and trim when dry
There may well be a better way of doing this but this works for me!