Cute stuff! You really like Lucario, eh?
I'd suggest drawing through the figure.. like.. don't just draw the shapes, think of the shapes as a 3-dimensional form, and draw it as a form~ Draw spheres instead of circles, draw them lightly, and then connect the shapes and make the final line dark so your characters have more depth..
I'm not a professional, but that's just my opinion~
Just keep at it and have fun!