@Zeckron--not sure what the bark is... I'll look closer in a bit, but I want to get some other comments down while I'm thinking about them.
EDIT: Maybe a coastal or California redwood? At first, I wanted to say gumbo limbo, but I was WAY off... I guess it's been a while.
Overall, I love the feel you're going for--you're absolutely right about the first room setting a tone for the temple, and, in my opinion, the "greener" the better--more vegetation. This temple should look overgrown with years and years of plant growth. I'm not sure I have any specific concerns yet... so far, so good. My thought on that railing with the vines is that I have no real problem with it, other than that I do wish the moss was possible. I understand you've tried several times, and I appreciate that... and I know you are diligent about getting this stuff right. Otherwise I'd be saying to try harder with moss. Anyway, keep it up!
@Lewa--I do have a small concern with the fire and forest medallions that I didn't notice with the light medallion (maybe it wasn't an issue with that one, or maybe I just wasn't thinking straight): The symbols seem a little too blended in with the rest of the medallion... it's only a big deal when the textures are scaled down in-game (which they are, so it is a problem)... really, it's not so bad on the fire one, but the forest one is pretty hard to see. Maybe you could darken or lighten the symbol to make it more noticeable against the rest of the medallion? I'm not certain exactly what to do to fix it.
So, in other words, we're really close, but not quite there yet (still--I know this has got to be frustrating!)
The UI buttons are good! (Yay!)
OK, so I'm gonna get off my lazy ass and do some actual work... starting with Zora Fountain--I made some progress a few weeks back, so I think I'm about half-way done. I know I've also got an updated texture for Zora's Domain, but I haven't plugged it in yet, so I haven't tested it. I'll upload some screens when I've made real progress.