Plenty. Butler has the benefit of good photography, he has a fine physique and the looks that add gravitas, but there's nothing intrinsic to this that no-one else could do. It doesn't mean it's not excellent. It is excellent. But we can all aim at excellence.
So that we all can learn something from this, it's worth pointing out the little things that make the fit so good, not just the obvious ones like the quality of the suit itself - which, if I recall correctly, was made by Steven Hitchcock. The main point is that everything, apart from the suit and the shoes, is relatively toned-down. The square (dark brown/green etc.), socks (dark green) and bow-tie (green raw silk - although it is blue on the other side - I have exactly the same one) are all muted colours and/or textures. There is nothing competing with the the suit and shoes, nothing jarring or incoherent. The shirt is a plain cream or ecru which is the perfect choice with a suit in this colour and with such a bold pattern - this is one occasion where the fall-back answer of blue would be totally wrong. But if I could be so bold as to suggest changing one thing, it would be the shoes. They are lovely, and the colour works, but I think a country brogue would work even better.