Mark you can just download the thumbnail for your synth to your desktop and when you're writing a post click the "Insert Image at Cursor" button to upload it to BPL. Let me know if that's not clear enough.
As for your synths, those results are pretty typical for existing photos. If I were going to photograph the LaCrosse Basin site I'd start by walking all the way around the tarp in a circle and taking about 30-35 photos with the camera on the widest setting. Then I would take some detail shots of anything you wanted to show off - gear, techniques, etc. Finally I'd back up and take a big panorama with lots of overlap making sure that the shelter is visible in several shots so the synther can match everything together. I'd probably take around 100 photos, as you get better you can take fewer (but hey they're cheap!). The first time it'll take a little longer, with experience you can synth it in a few minutes. It's best to practice at home before your next trip though.
Even with the very minimal reconstruction I can still learn a lot about your technique that I'd never get from a static photo. For example I see that you're using the lazr titanium stakes, platypus + aquafina for water, and in the other synth i saw a caldera cone. It's pretty cool!
Next time you're on the site please add the tag BPL to your synth so it's easy to find.