I think it all looks pretty good.
Everybody else pointed out all the technical stuff, so I'll just go with the one personal dislike I have.
The name and title block which is centered is just off balance. Having the post (or the beginning of it) squeezed into the right corner just doesn't agree with my inner eye or something.
I don't think I've ever seen another forum with this type of set-up.
I'm probably the only one thinking this way, so I'll just blame whatever OCD is lurking in my back brain and call it a day.
A reader lives a thousand lives, the man who never reads lives only one. - George R.R. Martin