Okay. First things first you need to start creating your own characters and artwork, rather than copying other peoples stuff. Fan-art is cool and everything, but only when it's done well. We don't wanna see fan art that isn't at least on par with the original art.
Secondly your linework is very shoddy, try keeping your lines smooth as they seem very erratic, unless thats what you're going for. Thirdly your lines seem very thick, try using different thicknesses for different effects. And neaten your shit up a bit too. If you do all this, we will all love you. <3