IMO all the majority of the shots have this effect, where the focus isn't dominant on the subject and the blurred sections are overbearing.

 

its not a problem with him, the camera or the lens. those are all perfectly fine. its just natural for a macro lens. thats just how they turn out, because of the focal length. dont ask me the technical side of it, but its perfectly normal to look like that, i promise! haha

if i find time i'll search a bunch of macro shots and post em up

 

When you get into macro ranges it's not uncommon to start measuring DOF in millimeters. You can always blend exposures I guess.