Start sketching the image you want to draw in a new layer. In this tutorial, I choose to draw futuristic aircraft fighter. I used the Brush Tool in Illustrator to do that. I named the layer "SKETCH," then locked the layer.
Since I will trace the sketch using a black stroke so I change the outline color to orange.
Tips: never use an outline color the same as the sketch, as you will have difficulty in differentiate them when tracing.
