Simple Manipulations

So recently, instead of creating Avatars, Backgrounds etc. I've decided to experiment with what I know to try and do some simple photo manipulations. I've posted the image below, if you're going to rate it and feel that there are areas which I could improve on then could you please tell me so I can take them into consideration when creating my next manipulation.

I only have one to showcase as my others have some big, noticeable errors.

This one I called 'The End is Nigh'


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