Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

If you've got an eye for detail, you can readily see that it's Oswald's nose on Doorman. Focus on the right nostril (which is left to us). Notice that Oswald had a more flared and visible nostril, while Lovelady had a smaller, less visible nostril. 

Lovelady had more overhang and hence, a smaller, less visible nostril. But, on the left, Doorman has the larger, more flared nostril of Oswald. It is definitely Oswald's nose on Doorman. 

Doorman's whole face is Oswald's, including the eyes, the nose, and the mouth. Everything from the eyes down is Oswald. The only thing that matched Lovelady was his hairline, and that's because they put it there.