But how can you get the picture, if you don't know who took it?
When someone says “do you get the picture” they are asking do you understand. Wayne is playing with that saying how can you be understand what’s going on in the photo (my life) when you don’t know if you haven’t gone through the situations he’s been in.
aka “You can’t judge someone if you haven’t walked a mile in their shoes.”
Similarly, he could also be alluding to representations of him in the media or public opinion that may be off base from reality. Also literally, some photos (pictures) of Wayne may serve as misrepresentations and I believe most people, such as myself, are typically unaware who the photographer of most, if not all the images they encounter day-to-day, is.
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