Those are pretty neat. I liked the perspective in the water lady painting, and her hair. I think you should possible use more perspective and pay greater attention to background detail in your work. Even a few simple lines will really add another dimension to your works. Still, iz good.

What was the portfolio for? A college application? I had to sort mine out not that long ago - a tip, if your taking a big A1 folder of work, don't think its a good idea to put your sketchpads in there as well. IT HURTS YOUR ARMS!!! xDD