This is a re-creation of a banksy piece which I have minipulated slightly
Here is how I done it
I started with the origonal banksy piece and brought it onto photoshop.
I then started with a black canvas with the opacity reduced to about 35.
I then went round the outside of the image with the paint brush tool and filled in the spaces with the paint bucket.
Then I put the mark of where he had a stab mark using the custom shape tool and then the paint brush
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I then put the text in and fitted it to the image and its finished, I have re-worded the slogan which originally was "Choose life not a knife" which sends the opposite message!