It went very, very wrong... especially comparing it to your signature, where you're focus is promptly displayed.
Basically...
- 2 Focal Points ~ don't try to pull this until you're much more experienced.... one is usually enough to work on anyway.
- Unappealing Text ~ barely readable... make the text as appealing to everyone else as it would to you. Clear, Consise, Stylish - practice with the Style Tools on that note.
- double you tee eff B/G - I'm not sure what you're pointing out here, but the B/G is just as important as the subject and I'm not sure where or how you came up with that. What you need to do, is focus on the expression, feeling of your subject - take your character on the right, for instance - she wants to purvey a dark image but her intentions are honest - so Blacks, Pinks, and her Eye colour are essential to your palette ~ and your palette and be incremented by using similar shades in different hues that WORK. Don't go making a rainbow.
- Finally, the border... or is there supposed to be one? Try a simple yet effective one, like 'Thickish Black Frame' or one I used for my Miku sig, a semi-trasparent rectangle up top and down below... and in my case with a different Blending mode. [And Experimentation in any case, is important to discover your own style].

Hope that helps. I do love your current sig though ;p
-Senseito