You've just taken a good step getting out of your comfort zone. Do that enough, and you will feel just as comfortable outside in the open as you do against the wall.
This kind of tags on earlier comments regarding your depth of field. Very simply, use longer lenses, move back to still get a good 3/4 or full length shot, and rack that aperture wide open. The image below shot with a 70-200mm f2.8 lens at 200mm f2.8. Note the nice pleasing background and how it doesn't fight for attention as it does in your images. If you had done something similar, eliminating the bright grass, and blurring the background, the images would have far greater impact and I think you would be very pleased with the results.
Also, note the tonal values below. Not real bright, nor real dark, but seems to match fairly well with the tonal values of the image. You get that by matching the same lighting for the background and subject. You got the bright grass because your exposure was set for the model it the shade, and the bright sun was exposing the grass. The grass really needs a couple stops less exposure, so they just 'blew out' on you. The bushes behind her in the shade are properly exposed, darker, and don't compete.
Try this next time you are out. Find a building that is fairly long, and has one side in total shade. Position the model in the shade, and line yourself up so that when you frame her in the viewfinder, all of the background is also in shade, and at least 20-30' away if possible. The more distance the more the background will be blurred. Then use a long lens (somewhere around 200mm), and open up the aperture to its widest aperture (ie, f2.8, or f3.5, etc). If you shoot auto, use Aperture Auto mode. Focus and shoot. The background will rarely compete with the model if you do this, it will be average in tones, and have a nice blur to it. The rest will all be up to the model and your directing her.
And move around. My feet are rarely still when I shoot. I move in, back, crouch down, climb up on a ladder, lay on my stomach, etc. Just watch the background as you move and keep it in a shady area.
You are making progress every time we see new posts. Awesome dude!
Most importantly. Have fun, and let us see the results [img]/ubbthreads/images/graemlins/smile.gif[/img]