1. So this one is sort of deceptive, because when you look at the thumbnails it LOOKS sharp... but when I click it to look at it full size... it's not. You missed focus on the eyes, and it *almost*... almost looks like there might be some motion blur, looking at the shirt, but I dunno if that's just the pattern playing tricks on my eyes. It's also very, very cool in terms of white balance. That can happen when you're shooting in the shade, which this clearly was, so make sure you're fixing that in-camera if you're shooting JPEG, and if you're shooting RAW and haven't changed it in-camera, make sure you address it during post. I'm also not digging the crop. I don't hate horizontal portraits like some people do, but I'm just not feeling it on this one.
2. Your lighting is far to harsh in this one. Her face is shadowed, which isn't necesarily a bad thing, if done right, but you have this super bright spot on the nose. I would have waited for the sun to go down some first before shooting in open natural light. Also make sure her face is turned away enough from the sun that you're not getting that weird cut of light across the face, like what is on her nose. Then you can fill in her face with some flash, or a reflector.
3. Her face is underexposed. You needed either a reflector or some flash to fill in her face.
4. I've already said it, but the sun is a bit too harsh. Parts of her shirt are blowing out. Also if you're going for a crop like this, try to catch it a little lower so you're not cutting off her hand. I would also have her face turned a little more towards the camera... 3/4's vs. full profile. Sometimes full profile can work if you're going for something dramatic, but here I think it would have been better as a 3/4 face.
5. Rinse and repeat previous critique. This one is also out of focus.
Good effort, but you definitely need to work on working WITH the light, and not against it
Wait until the sun is less harsh and/or stick to the shade when it is.
There's nothing wrong with shooting natural light (insert collective shocked gasp by TPF). That's right, I said it. Natural light photographers are just as legit as those that use flash... HOWEVER... GOOD natural light photographers know how to work the available light. Just because you're shooting natural light doesn't mean you don't put use to light modifiers. Get (or make) a reflector. Make use of diffusion panels and the like. Pay attention to the light before shooting.
It's a lot to think about, but you seemed determined. I have faith in you! I've seen people come a long way with a little determination and some work.
