selling while in training

Hi! So, I started training in March and have about 20 volunteers I am coaching on a weekly basis for the purpose of my audio submissions (and practice of course). I would like to start transitioning to paying clients but I have these two thoughts: I am not even certified so it would be wrong to charge for my services and I have not had enough training to have something really valuable to offer. I have a hard time believing that since I have not completed the training I am in no position to charge for my services. I know it is a thought, but what if it is true? With my volunteers I don’t even know if I am doing it “right”…if we don’t measure our success as a coach by the results of our clients, how do we know we are a good coach and our tools are valuable? ugh…I am spinning I know!! sos