In Japanese, you wouldn't call yourself any kind of "Sensei". Most people would say that they instruct (whatever). Kyoushi is only used for school teachers (elementary to high school), and there is another term for college professors (which I forget).
I could understand this if it was used as part of a new student's introduction (i.e. in other arts I recieved a pamphlet saying to call the teachers sensei or Mr/Ms/Mrs whatever.) However, in something out of context I don't think it should be used (mainly because it would look kinda silly.)