Organization

You should always organize your web page in folders so that when your site becomes very big it is easy to edit. You should separate pages by topics and keep pictures in a different file.  

Also the organization of your page should be good too. You shouldn't have a page that just keeps on scrolling forever. If it is too long then it should be cut down and should have links to other pages. If needed make links that will link to a page that has more links for a particular topic (ie. A school web page may have a link to schedules which then has links to schedules of specific items).