You're going to make a Scratch project that talks about you. An example is here - the Museum of me (by me, I mean Jeff Utz; of course, this will be about you).
Open Scratch (don't forget to log in) and create a new project by clicking on "Create"
Rename the project in the format <Your Name> - Museum of Me. Like "Jeff Utz - Museum of Me." You can even get fancy and rename it is Museum of <your name> - Like Museum of Jeff.
Can also upload pictures of yourself or things that interest you.
Some Ideas:
1) When a sprite is clicked, you can move it so that it is centered and change the size of it so it fills the screen. Don't forget to resize it and move it back when it is done.
2) You can use the Say and Think commands to put text on the screen that the sprite is saying.
3) You can add sound, like a recording. You can also add other sounds, like musical instruments.
You can't just use the say function, but you have to use at least 4 others.