How to list OP avatars on the left in topic lists?

Does anyone know how to put the OP avatar on the left of the topic list, like at https://www.helloforos.com/

That would be awesome.
Also related inquiry, if anyone happens to have any code that matches helloforos more default-xenforo-like layout, that would be awesome.

Thanks!

whats the code to do a background image like that in the link you posted?