Several people on the board have taken their own dog(s) to high levels in their chosen venue of obedience, rally, agility, flyball and/or field trials. Every trainer I've had has titled their dog(s) beyond the novice level in the sport they teach. One is a friend and I know she was mentored by the person she and I both took agility lessons from and my friend went on to become a judge. And yes, there are folks here who conduct classes, hope some of them see your thread and come to help.
What are you training your dog in right now? Becoming proficient with your own dog is a pre-requisite to teaching others, I think. I know for myself membership in an organization like CAPPDT is reassuring if I don't personally know the person or have great references on them. The U.S. version has an education link and lots of other information that might help you.
Association of Professional Dog Trainers