Typography being a secret passion of mine, a few thoughts.
Aside from the one with the barcode, your fonts are all really hard to read. As a rule, serifed fonts get harder to read as they get smaller, especially on a computer screen. The Kenshin* lettering also suffers from a lack of contrast; white on light blue and blue on light blue are not great combinations.
Of course, legibility may not be your biggest concern. Your goal here is artistic, not utilitarian.
In that vein, I suggest letting your letters be free. For the purposes of example, I'll focus on the latest Kenshin sig. There's a lot of negative space here, to the left of Kenshin and between Kenshin and the words. The vaguely peaceful feeling you seem to be going for probably works better because of that, but I think we could use the space better.
In the spirit of words, think about magazine covers. They make great use of the fact that words are still pretty easy to read, even when they're partially covered. 'Akira' is redundant here; its your screenname. Lets put it in the background, and let Kenshin cover part of it up. This won't work terribly well with Papyrus (that looks like the font you're currently using) so lets go sans for a moment. Verdana bold.
Now the extra text. This is a lot of text for a small space. I'd like something a little less flowery, but still serifed. In lieu of spending a lot of time looking for the perfect font, I'm going to go with Bookman Old Style. It's not great, here, but it'll do. Again bold, for legibility.
To try and keep something of the downward angled thing you've got, I'll add some small diagonal lines in the background. It's not great, but replicating the rainy thing you've got is going to take a long time.
This makes the bold text hard to read again, so I'll add a border. And a border on the whole thing.
Here's what I ended up with (I couldn't find that same Kenshin picture):
It's different from yours. Quite a bit, actually. But I think it solves at least one of the problems: legibility. It loses some other things, the rain especially. That could be added back in to the background, though, and probably even put in front of 'AKIRA' and still remain easy on the eyes.
The "let the rain fall..." is still a lot of words. And Bookman is not a good choice here. I bet there's a free font somewhere that works much better, though.
The colors don't quite jive with what you've got; they ended up much darker, especially with the harder borders. Solving that is going to be a little trickier. Good contrast requires some dark colors.
I'm sure you can find something that works.
* Pairing a picture of Kenshin with the word 'Akira' is also kind of confusing for those of us who are only mildly into anime. But thats tangential.
As long as I am alive and well I will continue to feel strongly about prose style, to love the surface of the earth, and to take pleasure in scraps of useless information.
~ George Orwell