When you have everything JUST so....and you stay up late to take a bazillion pictures of your latest creations.
Check the camera lens.
Just to be sure there's not a fingerprint the size of the space hubble on there.
Cuz if there is - your pictures will ALL be for naught.
(ok, maybe not all of them, but darn near all !)
*mutter grumble spit*
For more photography tips, check here