nice scene and good try with corona and landscape, 2 things :
- still can't beat the real thing (as in landscape photography), and will probably almost never, which leads to the next point.
- try to add some level of human intervention (with the landscape), something that is not naturally occurring or an artefact of nature - ie like cave holes or some kind of dwellings / ruins or semblance of a stairway somewhere, or floating rocks, or a crash landing of a spacecraft... even a farnsworth house will normally raise the effect.
