this is my take, here it goes:
i usually consider good musicians (drummers) as having developed the following 3 things:
- consistency
- tone
- touches
while not strictly in order, a drummer ought to be able to play consistently firstly. This means being able to play fundamental notations and beat structures, playing in time and having control over volume, before developing his/her own sound (tone) and touches.
at the same time, those aspiring to be teachers should be aware of teaching qualities:
- communication skills, ability to break down something to be taught
- commitment to continually seek knowledge in domain of teaching
- sense of responsibility
- empathy, or EQ
- listening skills
- ability to encourage, mentor, inspire
for those aspiring to conduct workshops for one-to-many, useful to develop presenter skills such as public speaking.
from the above, i would say, once you have at least the requisite 'consistency', and you would like to share this, and you believe you can share this to others who have yet to achieve it, its pretty much a personal choice whether to advertise yourself as a teacher. I would say "go for it, dare to dream!" but keep an open mind and be open to feedback always.
if you're advertising yourself as a player, having some development in all 3 musician qualities would be good, but it really depends what sort of opportunities you're looking at.
If you wish to join in a band and get playing experience, no harm advertising and get peers at a similar path as you to grow together.
Enjoy!!!