A procrastinator should never take an online class. While some of the online courses have online video lectures, all of them require reading and lots of it. Self-motivated and can learn by reading material instead of hearing the material presented in lecture form. Task oriented, able to understand and grasp concepts just from reading, and do not procrastinate. Do the work assigned, don't just do the assignments, but read the chapters and study.
Someone is able to read the instructions and following the course outline to achieve a good grade.
In online courses nearly all communication is written, so it is important that you feel comfortable expressing yourself in writing. Many instructors will grade on grammar and spelling as much as content. Well versed in on-line communications Doing the work. Update yourself on the work and the teacher's instructions. Helping others out with questions is important.