DTel 25672

[greebo1]

12a. In the finish attempt to make detour ( 6 )
I've put trendy but don't get the detour part

13a. I am wonderful, a man to be copied (8)
I have imitated but again where is wonderful?

[novalis]

It can mean wonderful ( slang ) so
I'm it a ted

[y-cymro]

I had Imitated too (I'm IT (wonderful) a Ted

[PuzzlingGal]

Finish=END
Attempt=TRY

[Catron]

Detour in this case means to go round - attempt (TRY( is going round finish (END) to get to the answer in (TRENDY).

[greebo1]

thanks to you all- must be having a senior moment or two not to have got the working out

[sarumite]

I also had Trendy for the reasons mentioned above by Catron, but in my view the clue is perhaps unfinished, and should be extended to add fashionable or a similar word after "detour."

[frankleigh]

I took it that the first word i.e. IN = Trendy, so the rest of it fits.