Allophonically transcribed list of very common words?

Hello,

I have a question. I have been studying English for some years now, and, at this moment, I have
reached the point that, in my pronunciation of English idioms, I sound very near native, which is
a good thing, obviously. However, over the past year, I have still been looking for more advanced ways to make headway so as to make it even more natural.

Does any of you know a good website or apropriate literature for the following:

- a list of allophonically transcribed words (so not phonetically) with a number of very common English words, like, e.g. goodmorning,

- also, a book or website that teaches you to make the right tongue setting for British English

Perhaps this may all seem a tad far-fetched, but I know that any further information on this can help me get even better.

Thanks in advance for your advice!