You may want to update this part locate here:
"However, this doesn’t complete your WordPress installation. Check this by viewing your site in a web browser – you should now see instructions for finalizing your installation of WordPress."
and maybe add the following:
"Some hosting services place an index.html file in your public_html folder as a placeholder. If so, you won't see the following screen, you'll have to delete the index.html file first, then view your website in a browser."
That's what happened to me. I use pSek and they put a place holder (You know the typical website coming soon thing). Once that was removed everything went OK.
Other than that, great instructions.