So, a little extra thought about lighting and it's effect on your photos can really help your photography. I just learned a great rule of thumb for when the lighting is best for photography:
"Shoot when your shadow is longer than you are tall"
The exception is overcast days. When it's bright, but overcast (meaning you can see your shadow, but it's a fuzzy blob on the ground rather than a sharp-lined silhouette) it's a great time to take close-up photos of flowers, insects, and any other photos that don't include the sky (because white or gray skies are pretty boring).
So, pay attention to your shadow to gage the lighting conditions and improve your photography!