Solution: Fill and Stroke
There are two squares. Set the fill color to no color (white square with red diagonal line). Set stroke color to black. What it does is that it will trace your image with black pen and won’t fill in the color. After tracing you can fill in color by swapping the color or use eyedropper tool)
Problem: I can’t make smooth curves.
Solution: I learned how to use Pen Tool by watching youtube videos and practicing several times.
Problem: I am so focused on the details that it is taking a very long time.
Solution: have the basic shape down first. Don’t worry about lines going over because when you do layers, it hides behind other layers so you won’t see the flaw.