For the basic netting, some very fine mesh like used in Tea bags can be super glued to the kit helmet with thin CA, and then trim off the excess. For foliage or burlap strips often seen attached to break up the outline you can use things such as pencil sharpener shavings or ground up seasonings such as oregano, etc. attached with glue.

rdmeyersr

I'm working on a small 1/35th scale vingette of a couple of 101st AB soldiers in Normandy for a young man who is about to go into the service and need help on how to do the camo netting on the helmets. The set does not have very good detail on the helmets so I'd like to detail that as they will be one of the first things seen. Any help or tutorials would be greatly appreciated. Thanks!

 

This looks pretty good? Never tried it however

http://www.ebay.com/itm/Hauler-Models-1-35-NET-Photo-Etch-Set-/361149366995?hash=item54162e02d3:g:V70AAOSwuMFUiiMo

It's allot cheaper and easier to use pantyhose to get the same effect just stretch it over the helmet and glue it from the under side of the helmut 

Yeah, the pantyhose works pretty well. 

Wedding tulle makes pretty good chicken wire too.