Since years I mostly work with Adobe Photoshop for graphic design purposes. - But I had to recognize a long time ago that there are even better programs with which I might be able to achieve much better results. To improve my skills, to perfect the personal work flow, and to qualify for new divisions, one of the applications I want to get used to in 2018 will be Adobe Illustrator.
I quick-drew the fictional character Amy Rose by Sega, scanned it, opened it in Illustrator, and tried to trace the face as good as possible. Since the interface and tools of Illustrator and Photoshop differ, it was more difficult than expected. - But not impossible after all.
To have some help I currently practice with a manual "Adobe Illustrator CC - Das umfassende Handbuch" by the author and designer Monika Gause. Up to now, I can totally recommend this book since all descriptions are easy to understand and underlined with hundreds of screenshots. ISBN: 978-3-8362-4505-0