Overall, there is definitely improvement here. It's hard to Cnc just because there are so many, but it's obvious that you've taken others' advice to heart, and that's good news. It kind of looks like my own sig career: some hits and misses. Your newest one is pretty good. I don't like the text, especially the little black nubbies underneath the America. The bg is interesting, but if you are going to put shapes in the bg make them stars or some such to go with the theme. Oh! And your text overall in these sigs is for the most part very nicely done. Basically, good work, and keep improving!