With this photo, the sky was clear and not a cloud was in sight but I knew that wouldn't stop me. I made sure my exposure was correct (no blown highlights).
Then I used some photoshop actions to lighten it up and give it better color and adjusted the skin tones to my liking and added some clouds as well to improve the overall image. I would have wanted to have a bit more light reflection on their faces though to lighten the shadows a bit more on the younger brother's face, but had to move fast 'coz big brother was running around. Anyhow, I'm pretty happy with the result and mommy was thrilled - that's what matters most ;)
BEFORE AFTER
Camera settings: ISO 160, F4, 1/320
Canon Mark III, 700-200 2.8 IS