Small details could be interesting like big ones and anything else. If there is something unusual, thich "catch" our attention. Then there is a contradiction in yours approach. If you're going to shot small details, this is typically "sharp everythging", without games with Depth of field. If you're using DOF, it's already not about details, but about portrait, stills, etc. Then for such photos you need best lens (with beautiful picture) and carefull post treatment. In yours case lens is quite moderate. And treatment a little bit "acidic".
Of course, everything above is IMHO:) Regards, Serge