First lemme say your girlfriend's very pretty.
With all three of these, I don't really see them as glamour. Of course, you could've been going for something else. I could see these more like portraits, but even so, with all three I don't see that extra something that makes them stand out to me. The first one especially -- all I see there is a girl drinking from a fountain. The third one feels like you're getting closer -- I get more of a sense of a feeling, a mood -- but I feel like the composition's off... the good ol' rule of thirds could be helpful here.
Technically, the first two are flat, and the background in the second one's completely blown out, so be sure to watch your exposures, too (things like that sometimes bother me, sometimes not, so that's pretty subjective, but I think even just a hint of some detail would be nice here).
Not trying to sound bad with anything, just helpful.

I agree with Terrace, there are lots of good books and things out there to try. That's how I learned most of what little I know up to this point.

Workshops are great too. Keep at it, and keep postin'!
Sam
This Rule 10 image has plenty of problems too, but it's the only one I could find right now that's even remotely relevant here.
