A nice piece of kit you look to have there Rob
I'd agree you're macro shot is a very good first attempt......the OOF edges makes the eye draw more to the sharp detail on the petals.
Cow & Calf.....I really like this one...the angle at which you've shot it with the light / shadows showing off the inscriptons in the rock ....you didn't leave a "Rob was ere 2012" then ??
To say you're half canned when you shoot some of these you do quite well ..I remember week 1 was taken when you were under the influence too!
I like the lead in with week 13. Maybe a little too much of an expanse of water makes the shard look a little lost although at the same time it gives perspective. Keeping tower bridge in the scene makes up for it. The sky has a distinct stormy look about it......caused by the missplaced filter??....works quite well though.