Those textures are a classic case of "happy accident." I've been trying to get the cool pattern that comes with using salt, but my paint's too pigmented or my paper's too absorbent or who knows what's wrong so I don't get the cool effect. I end up just splattering paint in frustration. Same thing happened on my Blue Jay. :/ Maybe some day I'll get it right...or maybe I'll just keep using this technique.
Oy. That salt method is always a bit elusive for me as well. The first time I tried it it worked beautifully, and I was really psyched about using it a lot. But then after the first time I just couldn't get it to work the same anymore.
Thanks again!