I really can't find something I like about it.
I don't like the colors, but that's because I highly favor low-contrast and high-exposure colorschemes more than the high-saturation you used in this signature.
It's massively over sharpened, even the background, which should be blurred a bit anyway, looks like it was blurred but then SUPER sharpened to nothing but pixelation.
Your depth is screwed by the crazy sharpening and the fact that all the photoshopped effects exist on the foreground. This means that all I can see is a foreground with a very spread out focal, and a boring background with color tweaking as it's only effect. The planes exist much too far from each other for the depth to be convincing anymore.
As a consequence of bad depth and over sharpening, blending has been compromised. Your effects stick out like a sore thumb, and your focal looks as if it doesn't belong.
This particular effect...
...seems to frame
the focal out from the rest of the signature, so you have an awful lot of dead, empty, boring background space. On top of that, you focused most of the effects inside this "frame" you made, making it seem like you entirely neglected the rest of the signature. This is giving it a very strong unfinished feel.
And a few little bits that I found that could be easily corrected: the hand...
...is severely overburned.
The bubble C4D makes it look like there's confetti all over the image-- unattractive to me.
And lastly, the image is cropped very oddly, there's a lot of space above her head, and a lot of space to the left of her. All this space just looks awkward.
I attempted to crop it a bit. Click if you're interested
, but you're probably already too annoyed with my dominantly negative feedback to care what I think looks best.
One good thing I can say is there are a lot of elements in this signature that I see you've put a good amount of work into. It's also not even bad, per se, it's just not great.
Keep working, you show good potential!
EDIT: as an afterthought... you shouldn't work with subject matter that you dislike. If you don't like anime, don't use it because I'm sure it affects your results.