New Signature I made.

[Sky.]

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[T.B.W]

The text is good and the girl has swag 7/10 Good Job

[Element 115]

Looks fine to me. 8/10

[Nizzy]

What needs to be fixed IMO:
-Color Scheme looks Weird
-White thing around the render
-Size of the render
-Opacity of the blur
-Empty

Tips:
You can try using some better gradients to enhance the colors rather than changing them. Making the render bigger fills up the whole piece and you could add somethings that go with the flow of the render. (C4DS and such) If your trying to keep the white aurora I would change the background stock to something that corresponds and blends in with it.

[Sky.]

Thanks Nizzy.
Updated version: