Hey there! Looks good! Now it's just a matter of drawing on a new layer (since digitally, it's always easier to clean up your drawings). I recommend breaking it down into stages. In the first one, draw the entire thing using light, subtle lines, making sure your linework is consistent and not sketchy. Take your time here. :) In the second pass, start improving the line quality by using thicker lines in areas such as the focal points, the contour, or where forms overlap. For the third pass, draw the areas of ambient occlusion and shadows, and even add a bit of volume using lines. Some people combine the second and third passes, but I personally like doing them in three steps. :) This way, you avoid trying to think about everything at once and can build it up gradually. Hope this helps!