The reference picture I used had a watermark in a spiral shape in the centre of the face which made it awkward to match colours annoyingly, should of noticed it earlier to prevent problems, or I should start making an effort to start taking my own photographs.
It was a lot easier to reproduce the colours from the photograph, I've only painted from a computer monitor which I don't think is good for starting out, ultimately I want to be painting from life, got a self portrait in the works at the moment.