Hi Steve, a quick welcome and a catch-up from me as this is my first visit to your thread. I'm still catching up with my themes but thanks for dropping into my thread and I'll try to keep up to date with yours in future!
Old - a sweet image that will bring back memories in years to come

Metal - really like this

It's a lovely poem to have in a park and you've done a good job with the focus and composition.
Captive - a really super idea and image! I don't usually care for selective colouring but this is ideal for it, and I like the small hands, which add poignancy to it. Definitely one to treasure.
Miniature - clever idea, and well done to you for using this challenge as a prompt to try new things. I'd never have guessed it was your first attempt as the execution in both capturing and compositing looks spot on to me

Happy - another great idea and one for the family album in years to come. The slightly OOF finger isn't a big deal, and I love the way you've got everyone involved.
Abandoned - all three are attractive images in their own right, but I prefer the mono version as I think the lack of colour suits the theme best. Also like the contrasting lines in it, as you noted.
Camouflage - works very well indeed, and I had to look carefully to see the black piece. I had the same idea with my photo of our black cat

Dangerous - absolutely meets the theme with those big sharp gnashers and the evil-looking eye. Like the textures and details, too.
Topical - a tricky theme but you met it with this image. The props and narrow DOF work well to make the point.
The Living World - I like the shallow DOF, the fine details and the contrast between white flowers and dark background in both of them. I would choose #2 for the less distracting background.
I've enjoyed catching up with your thread and will follow in future