So I've finally got it all done. It's ironed, it's been flipped now all that is needed is for it to be mounted onto the board :D
From using this for the pixels:
To this for the colours (roughly):
And finally the finished piece:
Now the question I've been asked is would I do it again? The answer is probably not on this scale. But seeing as I've just got my hands on some MINI hama beads....