I just ordered two "face veils/ cover" 2'x3' from ghilliesuits dot com at $18 each. Have made the same type thing for the last few years and lose them each season (brush grabs them off my pack) and can't make them cheaper given all the time it takes to make them.
I ordered one synthetic green and one synthetic mossy. Green for Alaska in Aug, and I will alter both to suit whatever terrain I find myself with the bundles of synthetic fibers I have from them as well.
A few zip ties or dental floss attaches them wherever you want. Also some of those doublesided velcro straps are great to attach to the arms. Makes you into a sagebush with little fuss, and comes off easy so you don't drag the whole mountain with you...