Last Topics (edit template)

Hello,
i must edit the template from my last topics overview. Later it`s must show like:
Result

But now its look like: Now

I have add the bbpress.css to my theme and have chance some thinks (you can see, I have delete the counts, etc.). But I must add the big profile image (now I have only a very small picture who pixelated when I chance the size). Additionally I want to add the date and the time when the post are written and the first line of the content.
–> I think for this i must edit the template files.

Have you any idea which template file i must edit (I have tested some but without any result)?

Thanks for your help.