Your library is your portrait.
Portraits are supposed to look within, but in my opinion very few people have an interior significantly different from the outside portrait.
A portrait is not a likeness. The moment an emotion or fact is transformed into a photograph it is no longer a fact but an opinion. There is no such thing as inaccuracy in a photograph. All photographs are accurate. None of them is the truth.
There are no bad pictures; that's just how your face looks sometimes.