The most difficult thing about any writing is being satisfied with a "finished" piece. The rule of let it lie in a drawer for a week, or two, then reread it and the needed revisions will be obvious theoretically can go on forever!
Write it and perfect it grammatically (yes, writing needs to be grammatical!): be happy with the flow of it, the sound of it, the look of it, then just revisit it later to check for typos and small errors, their/there, your/you're, etc.
If you love writing, you'll enjoy the revision, too! And be happy that HubPages allows you to edit; lots of writing sites don't give you that capacity, which can be very frustrating when you revisit and see a typo!