So this is my first ever piece of pixel art. It took me about forty minutes. I don't believe I plan to work on this more, being my first piece, it might be better to move on to something else, however I general critique on what I most need to work on might be pretty helpful. I'm going to guess and say general form (shape?) of the character. The anatomy is a bit off, I think. I'm not much of an artist when it comes to drawing. In fact, I don't do drawing/painting in any medium, but lately I've been getting interested in pixel art.

I also wonder if the canvas size is too small? It's 100x100 pixels, and the character is even smaller. He doesn't utilize much space, so I found adding details really difficult.