My camera is in for repair, so I'm only addressing half the challenge at this time.  However, I tried to make my three picks tie in to the theme of natural light.  The last two images have been posted here before.

This was shot at the Santa Fe photography workshop I attended in March.
This cow with an attitude was shot on our way home from Glacier National Park last summer.
This silhouette of Sinopah Mountain was shot on slide film a few summers ago.  I scanned it using a Nikon film scanner.