Claiming something is easy to do and then making the same errors simply diminished the strength of the argument presented. The comment comes across as "do as I say, not do as I do."
You don't appear to have spelt any of the words incorrectly. However, you did make a couple of typographical errors. A close look will show them up.
In regards to spelling errors, do you distinguish between the American and the more correct non-American spelling of words?