Take it easy, Polaris. It is not a terrible thing to use brushs from time to time. -.-

The first sig is empty, yes but I guess that's its theme, not every sig has to be crambled with stuff but it still counts as so empty. I'd have added more eyes and maybe some kind of a scene behind the heartless to make it look less empty.

The second, I guess it looks nice, all it was missing is depth and that was added when Polaris played with it, but as I look at both of them something about yours makes me feel like I like it better before the changes. It looks dreamy and softer and simpler. Just keep trying and playing around, you'll learn more techniques by playing around than by reading tuts and such stuff. Good luck, Tim!