G'day Darky,
I agree with CFI, but I will make a couple of comments... 1/ When you don't know the answer, do not be afraid to say, "I don't know, but I'll find out for you"... 2/ When you do know the answer, don't tell them the answer outright, instead, ask your student, "Where will we find that in the book?" Then if necesary, lead them to it... 3/ Don't ever ask a student a question that you don't know the answer to...
On the matter of experience/competence... please be advised that after almost 30 years of instructing in aviation, I've yet to have a student who didn't teach me something...
As CFI said Darkie; Go with your heart...
Keep the sunny side up,
Wayne.