I found this design on pinterest (always the best place to get inspired) and it really stood out to me. I love how it looks like a traditional botanical illustration many people do for science or a nature study, but at the same time its very obviously done on the computer. It’s like taking a traditional commonly done idea and reviving it and making it new. And I don’t think it would be that hard to do on illustrator either, if you’re proficient with the pen tool and gradients. If I were to go about illustrating something like this, I would start with scanned in hand-drawn art work and use the pen tool to trace the line and create the sections and strokes seen here. I’d vary their stroke width to give the piece some rhythm and depth and then fill in the shapes using gradients, changing the angle and intensity of the gradients to achieve a more natural looking color.