Hi Graham and other members, its going to be a lovely day today and my Nikon Micro lens is being delivered (Nikon 105mm f2.8 D series). I've also bought a Nikon SC-28 lead so I can have my Nikon SB600 flash off camera. So to shoot macro (flora) what do I do next PLEASE, e.g. how far do you hold flash from subject, what apertures etc.