We're going to use the <small> tag to make writing smaller like this

1. write something you want to make smaller
   I used to be small
2. write this round it:
   I used to be <small>small</small>
3. save the code and open the page in a browser
   you'll see this:
   
   I used to be small

4. go back into the code and change it to this:
I used to be <small>small</small> but now I'm <big>bigger</big>
5. save the code and open the page in a browser
   you'll see this:
   
   I used to be small but now I'm bigger

more tutorials to try

you might like to try these tutorials too:

• how to move text and pictures
• how to write text backwards