Not saying this specific one is a fake, but I never trust images of tweets.
Nor should you mate, though I thought it quite humourous and didn’t care too much if it was real or not, this one does turn out to be real… https://twitter.com/jamesblunt (about the 3rd or 4th tweet down)
He does have a bit of form for having a self-depreciating laugh on twitter - https://www.buzzfeed.com/robinedds/james-blunt-twitter-comebacks?utm_term=.qaDvvEgEDr#.ovP33BpBey
not forgetting the class https://twitter.com/jamesblunt/status/808599054989070336?lang=en
😃