) and attempt vague detail by the difference in sensation than your cones actually picking up that detail. Why that castle one works far more easily than the OPs since you are effectively colouring the image rather than attempting to reconstruct it...
SnapI see Cheryl Cole



I see Cheryl Cole
Me too!

The original picture of Cheryl has already been posted above.
It looks like she's got a big paper round.
I see Cheryl Cole