I don't think anyone could say "don't do it", but I know that me, masaegu and LearningBetterJapanese will keep an eye on things. What happens when people who aren't fluent start teaching, sometimes things go in weird directions.
I would recommend that Dymaz and Yumi exlore some of the Japanese learning podcasts, online websites and other sources on the Internet and/or invest in a textbook.
This part of the forum isn't really designed to TEACH someone japanese, but more to HELP someone. You really can't teach well in this format (can't see or hear each other)
You can try this
Learn Japanese with Japanesepod101.com
Hiragana Lessons - How to write hiragana
or look for others online, as well.
I think Kasomi (and others) here can be invaluble help, too.