You made it before my departure; I'm so proud of you, onee-sama! <3;
With that said though, let's get on to critique:
Your banners are very vibrant. They do not look monotonous. At all. Props to you for that. Another aspect of your works, and I'm talking about your tags in particular, that appeals to me is the fact that you do not shy away from experimenting with effects. Some of them have textures, some have c4ds while there are those with you trying your hand at smudging. Really, say what you will about yourself but that quality of yours, this so called 'urge to experiment', is something really good for graphic artists. There are those, such as myself, who tend to get comfortable with a style in particular and refuse to let go of it in favor of experimentation which, ultimately, does not help us improve ourselves. But you're different. You've steadily improved a lot and it's visible in your tags. So yes, good job. I really do hope you do not give up making banners/tags/doing graphics anytime because you're good at it and I can see you do great if you continue with it.
Your colors are great and tags aren't monotonous. You experiment quite a bit with effects. Is there anything in my opinion that can be improved? Yes. Your banners look appealing but quite a lot of them feel unnecessarily busy. They tend to suffer from an effect-overdose, if you will. There's just too much going on in them. Not that having a good number of effects is a bad thing; but they just end up being distractions when it becomes difficult for the focal to stand out among them. That's the case with
this,
this and
this tag, I feel. And perhaps a few more. You probably already know. Which brings me to the next point - depth. Quite some of your works, in my opinion, lack depth. Everything in your works, generally, has the same level of sharpness - be it the background, the render/stock or the foreground effects. You could do a lot better if you blur out some of the effects and sharpen the focal a bit in your works. Blurring them out to increase depth would also, to a degree, take care of the aforementioned problem of 'effect-overdose'. Because, in the end, both these problems are interconnected as they both stem from the lack of a distinct focal. So yeah, hope you work on that! :]
Your profiles and CSS are just plan gorgeous, btw. Keep up the good work! :]