How to Make Images That Look Natural and Reliable

The average image turns out to have a curious kind of howls eye type look presumably with blue for sky at the top and brown for earth at the bottom. But just picking pixels separately, even with a color distribution inferred from actual images won't produce images that in any way look natural or realistic. So okay, how can one do better? The basic idea is to use neural nets which can affect and code long range connections between pixels.