These shots are taken in daylight, with the sun shining directly at the motive. It is impossible without extra flashes or reflextor to avoid overexposure then.
The dynamic range is then difficult... in normal language it means, in full daytime sunlight you get both over and under exposure at the same time. The bright parts becomes to bright, and the shadows to dark. Shoting on a sunny day is actually one of the most difficult things to do. I think you made it well in youre shots here. From youre pictures here it is only no4 that are really suffering from overexposure (her white shirt is blown). I think all of these pictures can be edited to be looking great, but to achieve that you need to learn several technics. So, instead of spending lots of time with photoshop, use youre time to learn to take it right in youre camera.
On daytime I prefer to take my shots in the shadow. The dynamic range is then much easier. Normaly no areas are blown or to dark. The problem with shadows is that I get to little contrast, but that is much easier to fix. All of these pictures are taken in the shadow on a sunny day: sunny day portraits, and very little adjustment was needed.
So if you would like to take pictures that are without any blown out parts, or with to dark areas (wich give to much noise), then start by searching for those places with clean shadows (no sunshine at all, but an opening to the sky). Behind big buildings are my favourite. (If you take it under trees, you get to much shadow and no light from abowe).
When you are taking the shots, set youre camera on Tv, and set the aparture on at least 1/250. (on that speed you should be able to take a sharp shot). Then you read the manual to find out how to adjust the focus point. (The place where you would like the picture to be sharp). Don't use the average sharpnes, but let the sharpest part be the eyes on every portrait. Good luck, and have fun with youre next shoting.
and so its only saving them as JPG 
