5 START CLEAN, BUT STAY LOOSE

After some sketching, ideally you create something that you want to push further. At this point I’d create a new layer while also lowering the Opacity of the previous one, so you can easily draw on top of it. It’s important to stay loose and to not stiffen up when starting a “cleaner” drawing. Strengthen the design and the shapes you already put forth. In the past I often strayed too far from the sketch and became unhappy with the drawing. You chose to move forward with your sketch for a reason, so don’t disregard it too much when fleshing it out.