She took a course in 'freehand' drawing.
She drew the picture 'freehand'.
a 'freehand' sketch
(..) - I'll assist you. - No! Dr. Palmer will assist me. Thank you. - Image guidance, STAT. - We don't have time for that. - You can't do it freehand. - I can and I will. This isn't the time for showing off, Strange. How about ten minutes ago, when you called the wrong time of death? (..)2016 Doctor Strange