Plenty of hairspray technique videos on youtube, you need an enamel or lacquer base though with acrylic over.
I tried it for the first time a couple of months back and was mightily unimpressed to be honest, very very tedious owrk scrubbing and chipping the paint off, maybe I left it to cure too long before wetting and chipping?
I like the salt method, so easy and good random results
Let you base coat set, spray or drop water then cover it in ordinary table salt, shape it a bit if you wish, let it dry overnight and you an then adjust before spraying the rop coat by chipping some away, if necessary, re-wet and re-do.
Once set, spray top coat, leave to cure then soft brush and running water, rinse under the tap and brush off the salt, excellent results guaranteed, i used this method on my Desert Ducati just recently for example.
http://www.scalemodeladdict.com/forum/index.php/topic,2669.msg29186.html#msg29186