To sew my bugnet to my gathered end, I cut a length that equaled my ridgeline length with a couple extra inches on each end. Next I hung it over the ridgeline and clipped weights to the edges. I marked the curve of the hammock sides and cut the netting to that curve. However I left what could be called a "tab" of net at each end.
Each side of the "tab" was reinforced and had velcro sewed to it so that it could essentially make a tube for the hammock suspension and gathered end to feed through. I sewed one whole side of the net to my hammock and 1/4 length at head and foot ends on the open side. I used velcro tabs sewed several inches apart to hold the entry closed. (I would suggest a better closure device such as full velcro or zipper.)
With an 11 foot hammock with a 9 foot ridgeline I managed to make a 60 inch wide piece of net work for the whole bugnet. With the ridgeline on the inside it stays pretty much out of my face.
It's not perfect but it was easy enough for an amatuer.