It's good that you actually drew this one. Now try to draw a picture of Vash without copying someone else's work. That picture has already been done, much better, and all the work the artist put into it, working with the color, the folds in the clothing, the proportions, etc, they came up with on their own, and if you want to become a good artist, you'll need to learn how to do that on your own too. So if you want to draw someone else's character, get some pictures of them, so that you can reference what they look like, but draw them doing something that isn't in any of the pics you're referencing.
