There is something about a little spot of light on your subject that really makes it stand out from the shadows. This little Rough green snake briefly poked his head into a little ray of light – lucky for me, and it really makes the photo.

Rough Green Snake

Rough green snake (Opheodrys aestivus,), Great Trinity Forest, Dallas, Texas, USA. Canon 1DX. 70-200 + 2x teleconverter + extension tube. ISO 1600. 1/125 sec. @ f.5.6.