She's evil and wants to kill people, it's why she's so likable!
That being said, this is pretty great!
For textures, layering and using the layer properties (I've been using some Overlay, but try experimenting with the others to see what results they yield) can help. Then, blur/blend the textures and recolor/darken/brighten the layers (with color balance or the color replacement tool) to match the base colors you have underneath. And changing the opacity; that's another very useful tool. Layer after layer I guess, just try out new things!
And yes, looking at others' works is always a great way to learn and improve. For my LoL contest entry, I definitely had to take a look at the Vlad art.
I guess I have no choice but to start watching you. o3o