[Bareon]

I'm not exactly sure what you mean by "quality lost" but I'm assuming its the stretch of the color and textures, as that was the biggest issue trying to make these in GIMP. Eh it either would look artificially blocky or artificially blurred, with with what i know how to do so I tried to blur it to make it look more gradual. Especially in the last one where I tried painting in details to appear similar to the original.
Or mayhaps you mean the original had too much quality lost?