Hi,
I have been confused with these sentences for a long time.

1) I have done as you had told me. (Is it correct to use past perfect after present perfect?)

2) I have done as you told me.

I know that I can use past simple and then past perfect ( I did as you had told me ), but if I want to use present perfect in the first part of sentence, can I use past perfect or I have to use past simple in the second part to indicate that one action had happened before another action happened.

And if these sentences are correct, can they be used in formal context, or only in informal colloquial speech?

Thanks in advance.

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