Every time you make a change to your code, make sure you save it and upload it back to your server. Then you should be able to refresh your site and see the changes you have made.
Keep modifying and saving until you are happy with the way it looks.
Show off Your Page
Now that the hardwork’s done, you need to show off this page to the world. Create a new menu item or link to this page on twitter and direct people to your new page.