A quick catch-up from me, Michael, as I've just got my own thread up to date again, and you've posted some strong images
I really like your image for Sharp with those vicious-looking thorns and the warm red tones, and the second image for Guard works really well with the aggressive swan heading towards you and splashing water behind it.
For Thick, although I think #1 is the more obvious fit for the theme title and certainly makes a good image, I do like the mass of metal and wires in #2 and your B&W processing suits it well.
Finally, I can see what you were aiming for with Abundance, with both an abundance of hedge and snow, but it might have been better to either have more snow, or none at all as there's not really enough of it. However, given that you were out with your eager son at the time, I can understand the conflict!