I really like what you've done here, but I think the template needs a little work still.
To start with there's no demo, so I don't know if what I'm seeing is just something that's happening on my system or if it's a problem with the template universally.
Second, once I download and install the template, per the instructions, the pages are unstyled. This is because the template is called 'BlackJack_byFinner' and the folder created bears the same name, but the style sheet link referenced 'BlackJack' (without _byFinner). Renaming the folder and then changing the template to just BlackJack fixed that issue.
Once I was finally able to see the template, it seemed like the photos were shifted a bit too far to the left. After I checked a few of the images on my dev site, I realized that indeed some of the images are shifted partially off of my screen. I checked in IE and the images aren't cut off but the meta data on the right is, and the photo is shifted all the way to the left of the window.
Lastly, I don't see any way to comment on photos or view the comments. This may have been intentional, but I think it's a good idea for any template to include an option to at least click to open the default comments window.
All in all though, I really like what you've done here. I could really see myself using an adapted version of the template once some of the kinks are ironed out. I especially like your layouts for the about and archive pages, and may go ahead and incorporate some of those ideas into my own site.