To make a science fair poster by hand:

Step 1: Pick Your Poster Size.

This science fair poster was done on a black tri-fold.  Gather any information and images you want to use on your tri-fold.

Step 2:  Add a Title.

Using yellow paper shapes, lay out the stars at the top center of your tri-fold.  Enlarge an image of Saturn to place under the stars.  Now you can lay out your wording for your titles.  Use black quick letters for RINGS, red foam for OF and black jumbo letters layered with random primary color jumbo letters for SATURN. 

Step 3:  Add Information and Images.

Mount your information and images on colored paper and lay out on your tri-fold for a pleasing layout.

Step 4:  Add Eye Catchers.

Now you can add eye catchers or paper shapes to really draw attention to your poster.  I also added foam stars under the planet Saturn.

Step 5: Once you are pleased with your layout, you may glue everything down.

Step 6:  Add Lights.

You can really set off your science fair poster by adding Poster Lights to the rings of Saturn image.  Follow the directions on the package of Poster Lights.