There are 3 possible audience reactions to any speech, whether you speaking to 1000 people or just one person. On one end of the speaking spectrum, your audience craves more of you speaking. The other end of the spectrum, people feel that their time was wasted. Between these two ends of the spectrum is the middle ground where everyone considers your speech just average and ordinary.
The hard fact of life is that you are responsible. If your speech is successful or less than successful, it is your fault. This is a difficult concept for many speakers to deal with.
However, once you have accepted this premise, it makes being a better speaker easier. You begin to search out the tools to make you better. You might decide that recording all your speeches is the best way to learn. Seeking mentors or mastermind groups to evaluate you maybe another tool that is used. However if you enlist a mentor and that person suggests changes that you are not comfortable with or you feel is not the best, remember, ultimately your audience’s reaction is on your shoulders.
Remember, concentrate on being the best, not who to blame.