I shot this snap with the "TEXTURE" challenge in mind, but realised it is also suitable for the "LIGHT & DARK" challenge. So there you go one snap, two challenges completed "VOILA".

Just a simple macro/close up type Fujigraph taken in my home studio of a sharpened pencil point emphasising the texture, using a 105mm Macro Lens with lighting provided by three Studio Flash Heads each with a largish Soft box fitted and against a Black Paper background.
X-H1, 105mm Micro Nikkor (D) Lens, 1/250th @ F8, ISO-200, Multi Studio Flash.
Sharpened Pencil Point-03398 by
G.K.Jnr., on Flickr

for looking.,

George.[/QUOTE
Always amazed at the stunning detail that you obtain with this Nikon macro lens.
Another excellent piece of work George