Do you know what it takes to be a "teacher?"
Do you think you have to go to a higher education school and get some 16 letter extension after your name to be a "teacher?" Do you think you have to travel the world, have tons of experience, sat under under the footstool of some of the world finest, learned educators this planet ever put forth? Do you think you have to have the wisdom of the ages, a sage with words of articulation and charisma that just dripping with knowledge and experience? Answer? No, you do not. In order to be a "teacher" you only have to be 1 (one) step ahead of the person you are teaching. That's all.
Don't cut yourself short. You have experiences, and maybe some of the things you've encountered are actually more efficient, less costly, or simply simpler to do. You have something a brand new newby does not have .... you have gone one step further than they have.
Don't be shy. Share your experiences and knowledge. Even some of us "seasoned" folks can still learn something new too, you know!