What art program are you using? I’ve noticed you seem to be doing your lines and coloring on the same layers, judging from the little white pixels around the lines. You can avoid those annoying little pixels by creating a layer below the lines for colors. I’m not sure how to tell you how to do that, not knowing your program, but looking at tutorials on YouTube is always a big help! ^^ it’s looking good so far for your beginning to digital art!