First, I'd like to say that they're very good for a start, and kudos to you for basically getting the gist of it even when it was a bit hard to follow. Still, it could be seriously improved. Here are some of the errors I noticed:

1. The Dahlia render you used was ripped a bit badly, so you could still see white dots on the outline (and even a few transparent ones inside the render) which could be solved by a stroke, as specified in Part 3 of the tut.
2. In your first sig, parts of the edges seem to have been erased, but I can't exactly help in that matter, so best to be careful when using the eraser.
3. The text should never go beyond the border that you made, since it destroys the effect. Oh, and like Midnight commented to me earlier, it would be way better if you set the text layer to Overlay, then duplicate it a few times until it's visible enough.
4. Finally, a nice touch to any sig is to add a border, so what you can do is, before putting the render, make a new layer, press Ctrl+A to select the main sig area, stroke it with white and set it to overlay.

I think that's all (at least for a non-Photoshop user), so other than those little tips, you're off to a great start!

-- Like angel_of_nature said, your render isn't ripped too well. Find an image with a single-colour background, use the magic wand, make sure that anti-alias is ON and contiguous is OFF (this makes sure you don't accidentally select colours within the image), and delete the background. This normally nets you a lovely clean render~

-- More brushes are needed. You've done really, really well with the lovely brushes Photoshop automatically provides, but you HAVE to have custom brushes - and lots of them - to make really pretty graphics. Like I said on the tutorial, there are loads on dA and Google. Just searching "floral brushes" will return loads and loads of hits, and we all need floral brushes for our favourite Ace Attorney villainess <3

-- As far as I can see you haven't used any layer blending options, which are VITAL to making a pretty thingymajig. I don't know what version of Photoshop you have, but as far as I'm aware they all have a variety of layer blending modes. It's a scroll-down bar found on the Layers panel - in older versions, it looks like this.

-- Which leads onto my next point - EVERYTHING YOU DO GOES ON A NEW LAYER. I'm sorry if you already know this and I'm being patronizing, but this is just flat-out compulsory. Building up texture should easily take up 12-13 layers (and only a few of them should be set to 'normal' blend mode), your whole image (adjustments included) at least 20. Don't feel like these are numbers you have to aim for. The graphic should naturally build up itself.

-- The text seems a bit pixelated - did you enlarge it? Something else recommended (but not compulsory) for graphics artists is a nice selection of fonts. I downloaded a 300-font pack off dA and it's never steered me wrong (okay, maybe 300 is a bit overboard, but you get the idea XD ). NEVER use a site like CoolText or whatever that turns a lovely bit of text into an ugly blocky image D= Either download some fonts, or download some better fonts~

For the sake of getting all the main characters in, I have to ship Apollo/Ema, Phoenix/Iris (or Maya), Edgeworth/Kay, Franziska/Klavier, Pearl/Wocky, and Kristoph/Vera (!?). Only one relationship allowed for each person (unless their former personthingy died, like Thalassa), and I'm trying to minimalize crack pairings as much as possible. So far I've got Yatagarasu & co; all the Feys; all the Gramaryes; the von Karmas (and Pess :3); everyone from SL9; the Kitakis (lol); all the main characters (EXCEPT GUMSHOE! D=). If I get get in the Steel Samurai I'll hopefully be able to add Larry as well as everyone from 1-3 and 2-4. Christ, this is fun =D

According to this, Neil Marshall is Magnifi's granddaughter's adopted father's lover's cousin's lover's brother's lover's sister's lover's brother.

Aren't pointless procedures fun?

So that makes Magnifi Neil's brother's lover's sister's lover's brother's lover's cousin's lover's adopted child's grandfather, right? XDDDD

And Celeste Inpax would be Valerie Hawthorne's father's lover's sister's daughter's lover's adopted child's mother's lover's sister's(?) lover's daughter's lover's cosplay's lover's RL personage's lover. This is so epic.

Actually, I think you'll find Celeste is Valerie's father's lover's sister's daughter's lover's adopted child's mother's lover's lover's lover's daughter's lover's cosplay's lover's RL personage's lover's lover. So there XD

Also, one of my friends came up with the most brilliant link for Gumshoe: Gumshoe <3 Maggey = Viola <3 Furio = Phoenix. How genius is that? =D

Yeah, you got me thar. XDDD And...Maggey=Viola? o-0 When did that come up? But if you're trying to connect all of them....it could work, I guess. :rofl: