Knapping Attempts

I got a little flint-knapping kit for Christmas, and I think I've finally gotten down some of the basics, working on some bottle bottoms. I'm still kind of clumsy, but this is the first day where things started to fall into place and look somewhat recognizable.
The order of attempts is from left to right, and I think the middle one is my favorite, although I was able to remove material better on the last one (less of the original bottle surface remains).