Ah, okay, it's far too small to be used as a background. But, don't worry about that right now. :) You posted your art and that's all that matters.
It seems to me like you favor drawing faces as opposed to full sketches. Which is alright, so long as you practice your anatomy in the meantime. Your work definitely needs a lot of polish, but that's not to say that you're on the wrong path. Some hard work and practice will absolutely improve the quality of your drawing. Try to harness in your lines a little more. When you're drawing, don't "swipe" with your pencil so much. Try to draw your lines from "a" to "b".
I also suggest you invest in a sketch book. They're not a lot of money and, in the long run, it'll be better for you to practice with.
Anyway, keep up the work, okay? You've on the right track! n_n;