At What point one could consider himself to be an astrologer?

Im lowkey about my astrology knowledge and work in the business world.

The lasts days I've been frying my brain looking at the best career for me: Pisces MC

Randomly, today a co-worker just came at me saying that he went to an astrologer for help (recently he had a serious issue with depression). He is an aries sun too and right now when I checked my transits I saw a Sun trine Sun.

I've never been so fascinated and invested so much time studying a subject as Im doing with Astro, this is why Im questioning. At what moment one could label himself a pro astrologer? When one is able to provide a chart Reading?!

The astrologer charged my friend a good amount for one hour of what seems to be a natal/transit Reading + some alternative medicine lotions to use.

Where I see a hole in the market is that everything (products) are based on sun signs.

Imagine the bank you could pull by catering to moon or venus or mercury market.

PS I want 10% royalty for supplying the idea k thanks.

Check this astrologers opinion on the matter. https://www.truthinaspectastrology.com/articles/typical-stages-of-the-astrology-student

When you have enough knowledge and experience on natal chart analysis, different kinds of predictive methods and consultant skills.

There's no point to share more of wrong generalized sun sign astrology knowledge.