I provide here my past experience becoming an instructor, switching to "pro" field, and then giving up.
I started in a club environment, very cheap OW course, then free assistant instructor and instructor course. Instructors were not paid, and I worked in this no-profit environment (CMAS) for 5 years.
Then I switched to "pro" instructor, working in holidays resorts in small Mediterranean islands and at Maldives.
Did this for 5 years, but the responsibility was enormous.
After a couple of potentially deadly accidents occurred to customers under my supervision, I realised that the responsibility was really too much, and I gave up.
So, before starting this path, I suggest that you evaluate what follows:
1) do you want to become a professional instructor, getting your monthly income from this activity, or do you want to teach "just for fun" and personal satisfaction, having already another job?
2) If the second case above is yours, have you evaluated entering a no-profit club, and teaching for free, as it is common with CMAS or BSAC?
3) If instead the first case is yours, and you plan to become a "pro", do you foresee you working for a shop, or creating your own training center - personal endeavour, or working at holidays resorts in warm tropical countries? These are three very different "pro" versions, and I experienced only the third one (which is truly a fantastic life, when you are young)...
4) How do you bear the responsibility for the life of your students/customers? Have you had some previous experience of being responsible for the life of other people? (it appears You had, being a skydiving instructor already)...