Mmm I don't think it is Nylon as it is quite stiff.
Just tried another 'complete' flower and it doesn't look too bad. It probably doesn't help that it's night here and I don't have a good light (yet) and I'm working with light pink organza! haha I only got one maybe one or two small holes on the sides but I'm happy with it. I'll have to post a photo up when I can get one.
I think my problem was looking at something only half finished...I need to learn to put everything together first. Thanks for your help