Yes, you sure can! However, please keep in mind that Tellwell illustrators have fluctuating workloads, and while most often our authors are able to work with their first choice of illustrator, there is always the chance that your first choice may not be able to take on your project. This is why we ask that you list your top three choices of illustrators in your Illustrations Questionnaire, in the case that your top choice is unavailable.
Related article: Tellwell Illustrations Guide