I agree with the other poster about losing the pocket watch.

The shirt looks great - I’m guessing it’s fitted - but I might go with a lighter or more vibrant color - say, something more purple. The collar helps but I’d need to see more of it to see if it picks up the overall profile.

I’m not personally a big fan of a vest without a jacket, but if you’re going to do it I’d suggest bringing in the waist a bit more to emphasize your shoulders. This one just hangs really straight and isn’t flattering.

Colors are good, but it feels like the pocket watch chain is over-doing it. Don’t cross that line between dressing up, and playing dress ups / cosplaying. Just use a nice wrist watch. Metal or leather band.