Definitely better from when I last saw you. You're finally experimenting, & moving away from that bland render text fractal format. As for the sig, it's not bad, but there are some key points you should definitely work on. First, get rid of that god awful lightning bolt in front of Lucario. It would look much better without it. Then get rid of the horrid monotone color scheme, and add some color in there. Some light teal and light blue would look pretty good to accent Lucario and go along with the "aura" theme, of that's what you were going for. Either way, it would look better. It's also pretty busy and it has my eyes looking all over the place.
Regardless, you're getting much better, definitely.