First off, the second pic looks abit out of focus to me, but that may be from the web resizing. Even the first looks to have some artifactive from resizing. Hopefully it's just that and not OOF pics.
For the first, I dont' know if black and white is the best for this pic...there isn't enough contrast for me, the white dress and bown out sky is almost hard on the eyes cause there are no darker spots. It's too bad that there is a bush behind her face as well. But the look of her face I like quite a bit. I would try and play with contrast levels and do some selective burning of the edges and back ground. Also clone out the pot "hangar" over her head. It looks like an antenna is coming off the top unfortunately.
For the second, this one has real good potential as well...Too bad the hands were cropped off on the bottom. Same issue with cluttered background. Maybe burn some parts to lower the detail and clutter. But other than that I like it.