I don't think they're terrible. My first impression is they look very.. 1990 Hehe. ANd I'm not just talking about the dress. Just your poses and all are SUPER SUPER classical and old school. Which hey, if that's your thing, then rock it.. But I'd just try and go for something fresher next time. The location is GORGEOUS though! Love the colors around her.
1 - The problem here is that her skin looks orange. In an attempt to saturate the trees around her, her skin has become over saturated as well. There is also no light in her eyes, a reflector would be nice to cast some light back into her face. But the focus is good.I think the exposure is pretty good too.
2 - This one almost looks desaturated. It also seems a bit cool to me, the dress almost has a very very light blue cast to it. Exposure looks good. You can definitely see the detail in the dress, so good job.
3 - Again, color is off here, a bit greenish to me and no light in her eyes, especially the one with her hair over it.
4 - I have never been a fan of this look. It's okay I guess? I see up on the upper edges where you burned out your blacks, it's a little sloppy. I think it looks a hair flashy. And again, just so dated and old school lol. Sorry!
I don't think it's bad for your first time. You did well at exposing for the dress, and that's something that can be really difficult.