Okay, I will show you the picture first before I'll get into self reflection:
I made this last night, was pretty tired.
This is my very first signature based on multiple components, instead of plain text/single image modifications.
I did it for a request as well as getting into making signatures.
I started with getting the render, erased her other arm. I put her on the right side, face more or less on a crosspoint of the rule of thirds, area of hand/in front of hand approximately slightly above a line.
Added some lights, even though in hindsight I am not too comfortable of the blue one next to her face, would revise this.
Sides are a bit too dark, bottom a tick too bright imo.
Also the comeout of the smudge was not kind of what I was looking for.
All in all though I am kind of positive with it, especially for being my very first real sig.
Now I'd like to read some constructive criticism (positive and negative) and please spare me links to tutorials.