How Do You Edit Your Own "How-to" Artticle Once It Is Published?

Just published my first How-to and the grammar was good, but the layout was...well...bad.

It looks like someone has editied it for me, but I don't want to make any extra work for somebody else. I'm using IE 8, so it was difficult to preview the how-to before I published it and now I can't find where to edit my how-to or delete and start over.