[veranadine]

Hmmm...I would think that an actual etiquette (or finishing school) type of class would be appropriate.

This may sound like a silly step to take but I have often considered it myself.

Especially if you are considering being a diplomat, I would definitely go with a structured class of some kind.

As far as the slang words go, and perhaps your local accent is you have one, I would think about either taking a diction class or hiring a dialect coach (like actors use.)

This may be expensive though, so just keep your eyes open for any good books dealing with these subjects and be proud of yourself for starting (and sticking with) the Toastmasters.

I think that you are doing great, and these actions that you've already taken will help you immensely.

Blessings on all that you do,