I did these sketches based on T.S. Sullivant's illustrations a few years ago. When a particular artist fascinates you, it's a good idea to take a closer look and analyze why the stuff looks so amazing.
By re-drawing, not tracing, you can absorb the unique line work, shapes, rhythm, forms, and proportions in a way that makes you think. Maybe there is something there that you can incorporate into your own work. It's not a question of wanting to draw like this artist, but instead letting yourself be inspired.
I applied this method to Heinrich Kley, Albert Uderzo and others.
Some people call this: Standing on the shoulders of Giants.
Here is the link to my first Sullivant post, many more followed: