Nice work, for someone so young and new to this you've done a very good job. A few things to keep in mind, first off, try and crop your high resolution image so it isn't so overbearingly large when people zoom in. Also, watch your coloring in, I assume you're going for a certain style in having it go over the lines like that, but it sends to just look a bit messy. Overall good work, and thanks for sharing. Keep it up!