There has to be an opening for Spanish tutors, which you can check here: https://support.italki.com/hc/en-us/articles/115001499873-Is-my-language-open-for-application- Currently the Spanish community tutor position is not open, but they update the list every week. Here is the link for how to apply: https://support.italki.com/hc/en-us/articles/213716298-How-do-I-apply-to-become-a-teacher-