I did not necessarily intend them to look metallic; maybe it is the minerals in the soil? Start with a wide tonal range, nicely detailed color shot. [http://www.renderosity.com/viewed.ez?galleryid=732541&Start=1&Artist=Misha883&ByArtist=Yes] Take a look at the channels. Here, the RED channel looks nice, but the GREEN looks REALLY nice. Depending on how the whim strikes me, at this point I may choose just to use one channel unchanged. But, for this tutorial, copy and paste the RED channel into a new document.Then, copy and paste the GREEN channel over the RED, and SHARPEN. Then, change the layer blend mode to MULTIPLY, and adjust the opacity, here about 70%. And Flatten. Finally, I apply one one of Donald's curves presets, available in our Resource Center Downloads area (which for some reason I can never copy a link to...).