Hi Alison, just a quick catch-up from me on my first visit to your thread. I'll try to keep up to date from now on!
Old - the age of your subject and the sepia effect work really well for this theme. Others have commented on the tablet already, but overall it's a good start to your 52.
Metal - very creative and usual, and someone (you?) got to drink the beer first!
Captive - a very pretty cat with some nice catchlights in her eyes, and the paw poking through the bars sums up the theme perfectly.
Miniature - a lovely idea and some colourful little items. I would have preferred to see the whole basket, but it's a perfect subject for the theme.
Happy - good idea. As others have noted, maybe a tweak to the white balance would bring the colours up a bit more, but it's a pretty card and another good take on the theme.
Camouflage - the colours match almost perfectly, and good use of depth of field to throw the background slightly out of focus.
Abandoned - a good find. I like all the rust, and the way you've composed it at the end of the lane makes it seem truly abandoned and left to rot away.
Danger - both images work well to meet the theme. In the first one I like your low angle and the way he's walking into the bright sun, which seems to add to the sense of danger, while the second one looks almost as 'dangerous' from the way he has his arms out to balance.
I'll be keeping an eye out for your new images from now on