There are free-to-use royalty-free images you can download to use in your artwork at pixabay.com and pexels.com.
Learn the variety of brush/pen tool options.
Use the variety of drawing tools to draw lines. See the types of lines created by each tool. Note how to adjust the thickness.
Export the file as a png to save it as a reference for yourself.
See the variety of Shapes.
Explore the variety of shapes.
Export the file as a png to save it as a reference for yourself.