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Its alright.
The eyes and expression are spot on, which is the most important part of a persons face.
But the shape of the face isnt, you've depicted him as having a long face and wide jaw, but his face is quite rounded and his jawline isnt as promenat as its made out in your caricature.
He has quite a large forehead because of his receding hairline show more of his forehead at either side and his nose is narrower in the center.