Elena and Olivia Ceballos are 19-year-old twin sisters from Georgia who work as visual development artists at Big Ideas Entertainment on the Veggie Tales franchise. Their development as artists is as intertwined as the name they use online—Elioli—which is the first three letters of each of their names combined. The sisters work individually and together on projects; perhaps they have carried their collaborative habits into their professional work since they both are employed by the same company.
The sisters are notably prolific, even considering their advantage of being two people. Their constant output gives the impression that they are dedicated to self-improvement and studying the techniques of their art form.
You can see more work from Elena and Olivia on their Tumblr and EliOliArt.com, where you can travel back in time and see work such as the drawing below by then-16-year-old Olivia, already showing burgeoning skills beyond her years: