Hello! First a disclaimer: I do not have Adobe Illustrator at this time so I used Affinity Designer and I did not vectorize this. However, I still used the techniques of drawing all the elements separately, scanning and then creating a layout. This course was very helpful and I hope to get Illustrator soon (right now my computer has a hard time handling Illustrator and Affinity Designer because of lack of space).
After finding a good layout, I recolored the flowers:
I really loved how even though this was specifically for Illustrator, I was able to adapt the same principles to Affinity Designer (which is a less expensive alternative to Illustrator but it doesn't have all the features). Thanks, Bonnie for sharing your knowledge with us!