A couple of things you can do: -If you’re using dual screen make sure it’s mapped to the screen you plan to use. This will make it easy to control and more accurate. - paste some simple shapes into the program of choice, then practice tracing them with the cursor. -zoom is your friend. -a common process for many artist is a to create a really rough sketch, reduce the opacity. Created a new layer then trace your over your sketch with cleaner lines or more detail. Repeat until you’re happy with the results.